hehe... ya, ain't it?
Well, rims & tires if that qualifies as a mod.
Sport shocks seems like a given. Found a few manufacturers that have an application for the R107 listed. Want to do sport springs for about a 1.5" drop. Only found one manufacturer [B+G] that has an application for a R107 listed though there's probably more.
If I have the head gaskets done I'm thinking I'll have a complete head job done too and do the valve guides. (no, Not a mod.) But if I'm doing that, I'm thinking about also doing a Cam at the same time and beef up the valve springs too, if we can find one for it. I'm hoping if anyone knows where to get it my mechanic should.
Someone mentioned converting the car to EFI for both HP and fuel economy increases. However I don't think there's a 'kit' for it so would have to do complete custom I guess. (ACCEL-DFI, AEM, Edelbrock, Electromotive, FAST, Holley, MoTeC, Haltech? ... any recommendations? )
Exhaust? either complete or cat-bak? Probably complete & custom.
If any modz, probably won't be until fall/winter if not next year. Spent way -WAY- too much money this year already.