Hey, I'm in haverhill. Still kinda new to the area, so I don't know how far away that is.
The problem I encountered waws not taking it out, it was putting the new one back in. it was a brand NEW bolt that I broke, not the stocker
Getting them out should not be that hard at all, or at least it wasn't for me. It wouldn't hurt to hit 'em w/ some PB the night before, though. You also don't have to take out all the timing cover bolts, so you have less of a chance of breaking something. I definitely would NOT use a breaker bar. If you have to use that much torque to loosen up a 5/16 bolt, then you'll prob. snap it taking it off. Use a regualr 1/4 open end wrench to break them loose to make sure you don't use too much force and snap it. Then, get a long shank bottoming tap to clean all the block threads beofre you try to install ne bolts. And yes, do install new bolts. 4" 5/16-18 bolts. You'll prob have to re-use the 6" stud, though.
My problem was that I didn't have a long shank tap and couldn't clean all the threads in the block and I tried like hell to torque down the bolt into old corrosion and I had 1/8" to go and it snapped off as I torqued as hard as I could. I'm an idiot.
CLEAN THE THREADS!!!!!!!!! Use 3-in-1 oil and TAP THE THREADS!!!
The EZout might've worked better if I had drilled the proper size and depth hole before I tried the first time. However, I drilled it too shallow and thin, and it broke. Live and learn.
Let me now if you need any tips/pointers, and where's pics of your Saleen??