I have a chance to pick up a pair of Dart Pro 1 heads. They have 58cc combustion chambers and 195cc intake runners. I would be installing them onto a HO 5.0 with roller cam (stock) and 4bbl carburetor (converted from FI). The car is a 66 Mustang with an AOD automatic transmission and 3.50 gears; used as a street cruiser, not a drag car. My concern is runner size. Will the large runners be a problem in typical stop and go driving for a mostly stock 5.0?