Exactly my point Robert. There are so many combos out there. Some work, some don't. All these "experts" that graduated from Hot Rod Magazine U. will show you the latest ad, I mean article on how engines should be built. Hands down, that's the only combo that works. The best example I can think of , is when I lived in Fl. Two of my co-workers (both mechanics, one was a line mech. for 18yrs at a Chrysler dealer) wanted to build their 318's. The 1st was a long bed 2wd with 85,000 mi, the 2nd short bed 4wd with under 50,000 mi. Owner #2 worked for Chrysler. When I told them what I'd do, #2 told my I was full of sh*t, & had an article that Arrow Engineering had built a 318 with a certain parts list. Talked to them on the phone, & when asked how they lowered the compression ratio by putting heads with a smaller combustion chamber on, we were told by milling the heads???WTF?? I asked to talk to who actually builds the engines, thinking I must be talking to the floor sweeper, or something. He said he personally built that engine! Thanked him, hung up, explained that this guy DEFINITALY didn't know WTF he was talking about. Owner #1 built his engine the way I recommended. Owner #2 built his exactly the way they did in the article. Owner 1's truck ran excellent. Every parameter set down was met, or exceeded. Owner 2's truck fell on its face. Wrong heads, wrong cam, wrong carb, wrong setup! I almost felt sorry for him. Those TV combo's don't come cheap! Research everything you do. On the interweb, you ask a question, & get 10 different answers. How do you sort them out? I've fallen prey to listening to people I thought knew what they were talking about. I would LOVE to get the 440 upper end setup from ProComp! Heads, single plane (with bosses for EFI!) manifold, valley pan, offset rockers, bolt or stud kit! Next year, right after I build my garage! lol