I think for a 10+ year old car that has a bad engine noise, it's a bit high...even with the stuff he has added to it. I understand what they cost to put on, but the sad fact is you don't get much if any of a return on power adders and upgrades like that on these and many other cars. You know that going in usually and do it because that's what you want for it at the time. I personally wouldn't pay over $3500. Not because there aren't great upgrades, but because for $4K, you can get a pretty nice T/A or Camaro, probably more stock than that, but nice and with less miles maybe or something. If you look at it and the body is as sweet as he says, there is ZERO rust, and it runs and has all the add-ons and what not he listed installed PROPERLY and not hacked on there, maybe it would be worth the $3750 you have him at. It's up to you, it all depends on what kind of feeling you get when you take a look at it.