Wish me luck

I will be selling them, but I won't be pulling the motor out till it warms up a little. Probably going to try to sell the whole exhaust ( 2.5" with welded in "H" pipe and flowmasters and turndowns that end at the axle). Want to put 3" with "X" pipe and maybe tailpipes all the way back and 3" tips. My old exhaust should bolt on a 383-400 car, Wouldn't fit a 440 car without mods.