OK, first off.. will a 87 HF bumper fit on a 86 Si? if it would, what do i need? i tried and the 87 bumper is short. second..when i accelerate, around 3 or 4k rpm, my car wont go any higher in the rpm range. any ideas what could be causing this? third...anyone ever gutted out thier rex? any pointers? i pulled out body panels and its very dirty. just need suggestions ideas or pics. THANK YOU!!