whats it worth: 69 mach1 428 CJ 4spd

[black69]

I have a friend that has a car that drives, and the body is rust free and freshly painted (fair-cheap paint job), but the interior is worn and orginal, and we are not even sure if the engine is original or not (I learned its is very had to decode a 428 CJ as original block or not).

So my friend has to sell this thing (got the marti report, its a neat blue aqua color). Came factory with the shaker. no other options except an 8 track.

Is this a $35K car? 40? 45? Assuming its not original engine (we cant tell).

I told him $35-40K seemed fair to ask if its potentially not original engine. But I know little about fords.

rough ballpark advice appreciated. I am working on some pictures if needed.