bbc go right in a 82-92 easily just have minor clearance issues with heater box if u have one....buy u some headers made for the car and your will be fine... hedman sells em pretty cheap; i had a 83 that is currently for sale by the new owner on here had a 406 sbc 60ft with the back tires to 1.26 with sensatrac shocks on the rear and the stock front k memebr with 90 10 up front.... in my opion f bodys of that stle have a great suspision design ... build u a good tubular torque arm and boc the factory ctrl arms and pan hard rod and use the factory sway bar... car will hook hard on track and the street......if u need more advice just pm me i know all about em built it and had it for 8 years...