I have replaced floorpans, cowl, rear taillight panel, transmission etc. It has been an enigma for me. Every time I tried to work on it real life would throw all kinds of stuff at me. You can ask my wife. Hell once I did the first start up on a 302 that was freshly rebuilt and a dirt dobber had managed to get some grit into the oil gallery and locked up the oil pump, I even corkscrewed the ARP oil pump driveshaft. 2 pistons later that engine is back together and in a truck.