Only Mod so far is replacing the 6A-FC with a 4A-GE Silvertop c/w C56 and LSD. Oh yeah, and replacing the 13" steelies with 15" Racing Fear and YOKO's. Still working on the Brake Upgrade and Suspension. The knob who owned it before me put in a Sanyo HU with 6 stack but lost the stacker cartridge . But he did put 6" speakers in the Parcel Shelf, so it does not totally suck.