Interchangeable parts 89 with 99

[socialDK]

I've been holding on to my 99 GS in hopes of finding a descent used GS to put together a track bike.  I found a 89 GS track ready with some cool upgrades for $800 (bonus question,$800 worth it?) .  My question is how interchangeable are parts between these years? would engine parts be pretty interchangeable? Or suspension? Brakes? and so on. Thanks.

[syntax_error]

Should be the exact same bike. Everything should be interchangeable.

[Iarn]

I agree with syntax, GS is a very iterative design and little has changed over its production life. Should have very limited crossover issues, if any at all.

To me $800 for a dedicated track bike is worth it, totally. If it's in good working order and you're going to soup up your 99 with the parts... sure I'd pay that. A lot of the cost depends on area and your personal limit, however, so that'll always be subject to interpretation.