This frigging Roadmaster Engine and the company is giving me a huge headache....first, their install shop are nothing but idiots...long story short, first engine tapping after 1000 miles, brought back to them, they insist its the tranny, tranny rebuilt still tapping, idiots still insist it is tranny...I insist they pull the engine....crankshaft "out of specs" get second engine and the car back...missing and backfiring....cracked spark plug (how the hell do you crack a new spark plug in a new engine?) Now the friggin thing is tapping and they insist it is the exhaust...BS, it is coming from the oilpan again...I am taking it to an independent shop for an eval and if it the engine it looks like I will settle this in court...After getting my car 5 times and still screwing it up, what do they expect?