honestly if you want it done right, get a book and do it yourself, that way if it gets messed up you did it, a lot of time with headgasket jobs you have to take the head to a machine shop to get pressure tested and sometimes resurfaced, I don't want to be a dick, but asking for a warranty expect to pay good money, this is why I only do work for myself I thought that guys were trying to rip me off but in the end it never EVER hurts to have that head pressure check, because (and Im not saying you did) if you ran that car hot for too long resurfacing is a must otherwise you are out of luck, also get new headbolts or arp headstuds if you are keeping the car, because you can't reuse headbolts. Im just telling you because I made all those mistakes trying to get a cheap deal and in the end it would have been cheaper to take it to a shop.