How much should I sell my mustang for?

I am selling one of my mustangs, I don't know how much to ask for it. This is what it has... 302 rebuilt with 351 heads, Crane Cam, Crane 1.6 Roller Rockers, Edelbrock Torquer 2 intake, Holley ProJection Fuel System, MSD 6-AL ignition system, Blaster coil, Motor Sport Tall aluminum valve covers, three core radiator with custom shroud and electric fan, Dynamax 1 5/8" shorty headers, 2 1/2" off road H-Pipe, 2 1/2" Dynamax Cat-back system, PST lowering springs, KYB shocks and struts, Motorsport 3.27 rear gears. I also have a Holley 750cfm carb to replace the fuel injection system. Thanks Guys.

It is a 1990 LX Baby Blue very little rust and used to be a 4cyl.
The car itself has 136k miles, but motor was swapped and rebuilt 5k miles ago.