I am looking to upgrade to a magnum 5.2 for my 78 LeBaron. I want some more performance vs the smogger 318. I am not building a drag car. Just a mild street car. I know intakes must be swapped. Heads are prone to being cracked. Must use LA 360 car pan. What are my options for cams? I would like to retain the roller lifters. Trying to do this on a budget. Post up any info, tips, stuff to lookout for and most importantly your buildup combos. 78 LeBaron Coupe. 904. 8 1/4 2:94 sure grip.