my mk2s a 1985 with 114 k on clock, all ive done is service it, and bang a k+n panel filter in and drill the air box, then richen the mixture a bit cause it will run lean if ya dont!, along with the nice 8v grunty exhaust note theres a nice induction raw also and if it aint just me but the old girl feels alot quicker, and wipes the floor of my mk4!