I had them build my roller 350 2 years ago and quite a few things are really fishy about. For starters, I bought a used roller motor from a 91 cop car and dropped it off. Had them put sportsman II heads, a performer rpm intake, and do a basic build/balance on it. Well, once I fired it up, it made a terrible racket from the timing cover. I pulled it, took it back and they said someone forgot to tighten the cam retainer bolts. I barely drive the truck, maybe put 3000 miles on the motor, and it has gone through a set of plugs (NGK's) about every 500 miles due to oily suit, not to mention it smokes when I start it, and there is a nice black spot on the ground under each tailpipe after it warms up. Yep, both of them. It smells like a rattlecan rebuild to me, and aside from pulling a head to see if the pistons are stamped .030 over, and doing a compression check, what do you guys think? Main problem now is I live 2000 miles away in Rochester NY.