Chassis Suggestions -

12:34:40 don't go for the CRX (too rare, not practical), go for a 88-91 honda civic (also about 850kgs) or a mid 90s suzuki swift (750kgs). Both a simple little hatchbacks, lightweight, cheap to buy (a good shell with mediocre engine/box will set you back about 2k or so, so if you just want the rolling shell probably cheaper