I just stuffed a 460 into my '74 Ranchero. I used Crites motor mounts to make things go a little easier. Problem is, there seems to be a clearance issue between the frame and the oil pan. The engine was previously installed in a truck, but I have no idea what it was originally installed in. Is there an oil pan that will fit? Also, can I install the engine with headers installed? There seems to be very little room to fir them after the engine goes in.