try pipe-city.com they know the diff between 2nd gen sv's. I guarentee they will get ya what you need. I saw 6 diff yosh full systems for the 05 when i looked it up. Just type "sv" into the search engine and scroll over to yosh ;D
M4 Exhaust has full systems for the 05 SV and has a awesome sound. It mellows out when cruising but is nice and throaty down low. I have heard both yosh and m4 and prefer the M4.
Warning...make sure you get a 04-05 exhaust and not the 03. A lot of places are advertising wrong saying 03-05 but the 03 has a different mid pipe. Do not buy a 03. Do a search on this tech section and you will see the post about this same question:
Call Yosh and M4 and ask them directly for the correct part number once you decide on the system you want. Specifically Carbon, Titanium or Stainless mufflers (lightest to heaviest). I bought the M4 Full Carbon/Titanium/Stainless system. The Titanium was $50 more and the only titanium piece was the 9" section of mid pipe. not much of a weight savings there. Personally if I had known that it was that little I would have bought Carbon/Stainless. I paid $689 for mine from Starcycle that included shipping also.
Check out 2wheel junkie (Site sponsor) and see what they can do for you. Also check ebay but beware a lot of ebay adds have wrong years listed. Get the part number first then go searching.
Here's a link for all of Suzuki bike with years I had done a search about a month ago when I was looking for an RS-3 slip on for my '05 originally the 03 part was ordered for me but I looked further into it and found the right part# for the '05 it will also fit the '04....The Correct part number for a Yoshimura rs-3 Titanium is 1112257 which I got but here is a link for whatever one you want....