A Q-code coupe is fairly rare and it sounds like the one you have is pretty loaded. If you really want to know how rare it is, purchase a Deluxe Marti Report, he will give you a breakdown on the different options, etc.
The 73 351-4V was just that, a 351-4V. Ford used the "CJ" designation only in the '71 Mustang to differentiate it from the two other 4V 351's. It still carried that designator in other body styles, which is why it's commonly called the CJ.
Big Horse Parts & Restorations
Either way, it's still a desireable car. I personally would take some good pics, get the car running and put it on eBay. A car like that should have at least a chance at a restoration, not be ripped apart for it's desirable components.
eBay has recently changed the listing fess structure and it's free to -list- your first four cars, you only pay if it sells.
eBay Motors -
IMHO, I the guy still wants the motor, make him buy the whole car. I would price it to make him think twice about just pulling the motor and tossing the rest aside. I'd start in the $2.5k range, but without pics, it's hard to say.
FWIW, the tach cluster & harness setup is $700, the tilt column, $300+, console, $150+, 9" rear, $250+ depending upon gear or trac loc, tranny - $200, engine - $500 ~ $1200 dep. upon condition, rad - $150 if original, etc etc.