I went down to check on my Barracuda today, and as a result I already know the first thing I would have done differently on my engine build and it hasn't even been fired up for the first time yet. I'm running a Comp Cams XE268H which I know will make decent power. When I was picking my cam, the machine shop mentioned that I could get a little more power by going with a roller cam, but it would cost several hundred dollars more. I figured the hydraulic flat tappet cam would make plenty of power so there was no need to pay extra for a roller cam. Turns out I should have gone with the roller. Most motor oil used to contain an additive called ZDDP that is no longer used. (Googling 'ZDDP' will net you a wealth of information, here is one article about how the new oils are killing our cars). The reason I found out was because the first question the tech asked me today was whether or not my engine had a roller cam. Since the oil manufactures are no longer putting ZDDP into their products (except for premium racing oils), you have to add it in yourself if you're running a flat tappet cam. Without the ZDDP, your flat tappet cam will wear out very quickly. Since I chose a flat tappet cam I'm stuck paying for expensize additives or running expensive racing oil. Such is life, live and learn... Running a roller cam isn't a panacea though; most roller cams available for the Mopar 318 are either engineered for the later style engines with Magnum heads and computer control, or they have excessive lift - good for performance maybe but hard on the valve train.