What is it Worth? - 88 Mustang GT convertible - 351w, c4, etc

Just looking for a ballpark here, this car has been sitting for a while. Here is the mod list as best as I remember.

69 351w
Edelbrock intake
Holly 650 double pumper carb
Mac Headers
Mac H-pipe
Don't remember which mufflers
Dumps before the axle
Aftermarket subframe connectors
Aftermarket LCA's
C4 transmission
8.8 Rear with 3.55 gears (I may throw in another with 3.73's that whine)

I didn't do the mods on the car, but I was told the engine has a mild cam and some lightly ported stock heads. It honestly doesn't feel like more than 300hp to me, but I have verified its a 351w by measuring the width of the intake. I haven't done much with the car, and I really don't have a lot of interest in messing with it. I'd rather have the money for messing with another toy. So, what's a rough ballpark fella's?

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