SHOCK for a First Gen: Busa, ZX, or Something Else?

Well, finally going to and change my bike from stock. First up: suspension. Let's talk shocks, okay? I'll save the front end for another thread.

I've tried to pull together the info scattered about on svr and other places on the net. It's confusing, because a lot of the info is regarding second gens, which need a much lighter shock than the same rider on a first gen., or it's for riders lighter than me, so bear with me.

I'm 229 lbs without gear. (Maybe 240 lbs., with?) I keep saying I need to lose weight, but it hasn't happened, yet. No trackdays, although they're not out of the question. Also, no twisties anywhere nearby, although I sometimes travel in seearch of them.

My goal is to swap for a second-hand shock, for as cheap as possible, with as little cutting or fabrication as possible, and without altering the ride height or geometry. So, the short question is, is all of this possible?

My understanding is that I want to come as close as possible to the stock shock length of 338 mm eye-to-eye, and keep the diameter to about 80mm. At my weight, Penske recommends a 700 lb spring, which seems kind of stiff to me, but what do I know?

I've seen people recommend the Kawasaki ZX shocks (ZX6r (a/k/a 636), ZX10, ZX14); the diameters are around 80mm, and the lengths are 338mm for the ZX10 shock, and 340 mm for the ZX6r shock; not sure about the ZX14 shock -- anyone? I think that the real question I have about fitment concerns the placement of the reservoir. Which years for each of the ZX shocks is ideal for a first gen SV? I've seen conflicting reports on which years will fit a first gen without cutting. Are there any that would be a drop-in replacement?

Also, the ZX shocks seem too light. I've seen people write that the stock first gen SV shock is 510 lbs./in., but I've also seen it reported as 540. The ZX6r and ZX10 shocks are only 540 lbs/in., right? And the ZX14 is 543? (Hard to believe for such a big bike, but that's what I've read.) Seems much too light for me; will there be much improvement if I go with a ZX shock?

Now, the Busa shock is sprung at 700 lbs./in., so that seems more reasonable. But it's 330mm, right? That's 8mm shorter, or about 1/3 inch. Enough to matter? What if I used shorter (shorter, right?) dogbones to raise the ride height back up that 8mm? Would that screw up the handling, or am I on the right track, here?

If the Busa shock is the way to go, which year? I assume one from the first gen Busa, as I understand Suzuki made the spring even stiffer for the second gen. But will any '99-/07 shock do, or are some easier to fit? Again, I'm looking for a drop-in replacement, if possible.

I have a line on a member's Busa shock. It's a 2005 with 5,000 miles on it, in good shape. He says that the stock dogbones will work but will cause it to sit lower in the tail than factory. He also says that I would have to modify the pilot's seat mounting bracket on the left side of the bike by trimming about 1/4" off of it so that the resevoir on the shock will clear, but that there is plenty of material to do this. What do you guys think? Will this work as advertised? If I do it, should I change out the dogbones, and if so, to what size?

My other thought is to get a ZX shock that fits as a drop-in, and have it resprung (and revalved?) for my weight. I'd rather avoid the extra expense, but if it's the only way to do this, I'd consider it. About how much would that cost, and who do you recommend for this work?

Finally, please don't tell me to just buy a Penske, or an Elka, or an Ohlins. Even if I had that kind of money to spend on this, I think it would be overkill for my needs.

Thanks for reading. Look forward to the replies.