So, my car started acting weird a little while after taking it through a car wash/getting gas. At first i thought maybe it was water in the gas tank or maybe bad gas? But I added some of the stuff from autozone to put in your gas tank for that, and no luck. I really only tried this because I was hoping it wasn't my optispark from the car wash...

Anyway, I guess i'm going to have to pursue the optispark replacement route. What kind of price should I expect from a garage for replacing this? I don't want to get gouged and molested too hard. I understand you need to take off the water pump and what not to get to it and what not, but that it's not exactly THAT hard.

This is a '96 z28, by the way. And by 'acting weird' I mean when it started sputtering/backfiring 20 minutes later when I was driving, and now when I start it the car's idle is weird and sounds like it has a cold... and it won't run... it shuts off after about 10-15 seconds.