1988 5.0l lx

[Spat]

Hi i recently found a 1988 ford mustang lx 5.0 with a 5 speed. its been off the road for the last 4 years and has only 30,xxx kms on it. there have been a few basic mods, heads headers, exaust, ram ar hood, short shifter....
its black on black with no visable rust or dents.
5 star chrome pony rims...

i live in southern ontario and clean stangs are hard to come by in black on black... i was wondering how much a car like this would go for..
I am going to take the car to my mechanic and have him check it out for any problems...
the guy wants $10,000 and i'm jsut wondering if this is to much for an 88 lx.