One of the biggest thing I don't like about the my GSF is the tail light. it's just ugly IMO. But anyways, are there are mods out there that i can purchase and install? I really like the tail of the SV650. is that possible? if so, anybody done it themselvies and offer a couple pointers?

What year is your bike?  I have an '04f, and supposedly I can put another bike tail on it.  (I think it's the GSXR750???)

or you could be creative...

it's an 04

Ebay has some clear taillight lenses with LED integrated turn signals...  Look great but for $80 +s&h, I'll pass

I put this CBR F4 tail light in but it was not a direct fit.  I had to tie-wrap it in.  I think one could make an adapter plate for a better installation but that's too much effort right now.

http://us.a1.yahoofs.com/users/42207930zdb479e32/eff6/__sr_/f72fre2.jpg?phAqdxDB_aTh1jd3