This has to be one of the most popular topics for Hemis (and any motor for that matter). What should be used and what's available for these old motors. 1) Intake manifolds... - What's good for what application? - What manifolds will "over-carb" in relationship to various set-ups? - Vacuum considerations? - Cast vs. U-fab intakes? - Features of various stock manifolds for different makes and models? (I.E. Water flow) - Who's still making them and where can I get one? 2) Exhaust manifolds... - Which ones are interchangable and for which makes and models? - Types available? - Stock vs. aftermarket? - Make your own or buy them? - Who sells the headers, kits, etc.?