You using clipons or bars?
I've got clipons, LSL offset match, and I have Goodridge SS lines- I ordered the length for the forks I have (00-03 GSXR 750) and the length was fine with both the stock gsxr clipons and my LSL's. I've got enough room that I could easily go up another 2" with clipons (bars might be pushing it though).
I want to mount bars when I put my GSXR front end on, how do the GSXR legs compare to SV legs in terms of length? With my stock forks and dirt bars I'm currently running the stock lines but I've got a set of Galfer SS lines laying around. They are supposedly for a naked SV but one line is about 1/2" too short.