eighty bucks? lol

dang that's out of control.....

you have the exhaust valve clearence correct,
the gap for the intake valves is .005 - .007"

but be careful breaking the bolts on then rocker arms, on an LS, they're just sitting in a ball socket up against the cam... so if you twist too hard at the wrong angle, the arm will pop out on you, and you'll have a stroke because you'll think you just broke your engine...

practice makes perfect, try it yourself. it's not hard
-jonathan