Is this a good price?

After 12 years of ownership, I'm going to let my car go. I'm trying to see if this a reasonable price to ask before I place an ad.
$6,500
1990 Mustang GT Hatchback 5 speed.
129,000 miles
AFR 165 heads, crane 2031 cam
1.7 Roller Rockers
Cobra intake
70mm throttle body, 75MM mass air
BBK equal length shorty headers, 2 1/2inch exhaust, flowmasters
24lb injectors, adj fuel press regulator, 190 lph fuel pump, K & N air filter
Kenny Brown Super Subframe connectors, KYB shocks and struts
FMS underdrive pulleys,
Pro 5.0 shifter, Cobra clutch, poly trans mount
3.55 rear gears
Griggs racing twin tube torque arm and panhard rod.
T/A girdle
Sony CD player, 6 pioneer speakers, Sony 5 channel amp with single 10" sub
russel speed bleeders

Any feedback would be appreciated.
Thanks

Thanks for your input.