I have a 73 Mach 1 not fully restored, but need to sell and don’t want to get taken advantage of because I don’t know cars. Any help would be appreciated. I have original 351C and automatic transmission, but the car currently has a 351 modified to 400 (which the previous owner drove and overheated, so being told it needs a rebuild) and a 6 speed Tremec transmission. All body panels replaced, including floor pans. Was wreck since and needs new front passenger fender. Any idea what price range I should start and end with? Any help would be appreciated.

Previous owner originally painted like this and didn’t prep good so paint blistered and had to be stripped again.

Previous look

Current condition exterior.