looking for a running l98 for my 88 iroc. currently has a 305 but sounds very rough. hard nocking sound. I am willing to trade my 91 firebird convertible for it plus some cash. i figured my car is worth aroud 2,200. it has a 305 tbi 4 speed automatic, 4 wheel disk brakes 9 bolt posi rear end. car has around 135k miles and it is located in las vegas. it is currently prime with about 95% of the bodywork done. I have a gallon of red paint to with it. The car used to be red