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+1, if your single blade go 6061. thats what i run with my edelbrock efi
thought i would go with a twin blade save about 500 bucks cbra twin 64s are pretty much free and the sulivan for 320 bucks looks like a pretty nice elbow.didnt think i would see that much diff between them what do you think? 5.4 12to1 comp flat tops manley h beams forged crank trick flow heads ported comp cams 278s edel. jr. intake everything port matched going to be spraying it 200to250 on a plate from dave at nitrous daves outlett. everthings in but my elbow and throttle body look to be on the dyno at the end of mo.