The fact you have had it on so long now snooze i think you may be in some trouble in that...
- There seems to be a lot of people selling modified cars all at pretty good prices
- Most people still have the idea in there heads if the cars stock/stockish it's been looked after and not thrashed.
- Me personally if i was to buy a modified car i would be getting one that is heavily modified eg forged internals, massive turbo etc etc.
I think you really have to two choices...
1 - Ride it out as maybe the right person has not come along yet.
2 - Strip off the parts that are worth a fair bit of money and return it to stock performance wise. The kit i think would be a big + but if you can sell your turbo, injectors, coilovers, fmic, wheels and a few other goodies you might get $3000 - $5000. Spend maybe 500 - 800 getting the stock parts and then sell your car for like 12 - 13 which would be more suited to the cheap people out there.