Let me stop you right there. First of all modifications on a car don't mean diddly dick. Second it doesnt add to the value of the car infact half the time they devalue it. Third check on craigslist. Those that are listed around 6k have no bad syncros or nothing wrong with them.

5k into a car isn't an investment. Correct statement is "I have put 5k into the car."
A little birdy told me that you've been trying to sell this car for quite a while now. I would take cash + ep3 for my SRT. But to ask for 7.5k for your car is ridiculous.

I'm not trying to lowball you I'm giving you a realistic offer. Considering your "bouncy ride" is prolly blown struts. Lets try this again. 6.2k and you can keep your pioneer radio. ipod connector, and those "mugen inspired" red carpets