I did mine myself a few months back its not a big deal...but i have skinnier hands so it wasnt too bad...passenger side was a bit easier drivers side had a little less space but it all wasn't too bad, just work slow and should be fine....but $800 is ridiculous...id see $300 to $400 being reasonable, it was a weekend job for me cuz the fel-pro i got sent me two of the same sides. but should only take a day to do it...change out your plugs while you are at it!!

 

That's what I said It stands to reason that if the covers are leaking, you probably haven't done the plugs either, so kill 2 birds with one stone.