hi there i finished my A cam install with redrilled timing gear. 3 seals, timing belt, seal retainer gasket, tensioner. the A cam makes a improvement from the stock m cam. the most noticable is from 55mph to 80mph. where i needed it most for passing. it is now acceptable. the only thing i didnt care for on my 240s was the power. i have another one on the shelf for my other brick. thanks for the answers. o yes 9 hours for this non mechanic. :-}