most of us here don't care for the flashy body kits etc. If the engine IS NOT rebuilt, ported, or has turbo work it isn't worth $5500. He's tagging on an extra $1500 for the body kit and paint which FC owners won't pay for. I haven't seen pics but if it were me I'd only want it if it has been ported, or has some serious suspension work. For $5500-$6000 you can have a VERY nice, and pretty damn fast TII if you built it.

$1000 for the car,
$2000 for the rebuild, porting templates, external engine gaskets
$1200 haltech
$750 BNR stage 3 (rated 350rwhp at or below 15psi with a STOCK port motor)
$500 front mount, piping, bov, etc.
$350-$480 wideband o2 sensor

Labor= $0, cause you do it yourself