I started her up, waited for the RPMs to drop, everything was normal. I go, about 15 to a stopsign, hit the brakes, and the RPMs drop to about 400, then it goes back up again. I was thinking, thats wierd. Then it did it again at another stop sign before I got on the freeway. Then it was fine. Whats wrong with it?
Fuel filter is 10 bucks and about 10 minutes of your time. Do a search on it and you'll find information on how to change it. Easy.
How old are the plug wires?
Differential bushings will cost you about $40. Go with polyurethane bushings instead of rubber, they will last longer. (Yours are rubber) You can find them on ebay or from MN12performance.com.
They are not hard to take out. Basic hand tools and an hour of your time is all you need if you know what you're doing. I dont know what a shop would charge..I dont ever let them touch my cars. Im sure if you do a search on "differential bushings" you'll find all sorts of info.
Some supercharged cars blow.......Others just pick up and move.