Called PTC up today and spoke to Kenny. I need a converter for my '69 Barracuda with the crate 390 hp Moper 5.9 Magnum (230/234 @ .050" .501"/.513"). Car will have a 904 with 3.91's and will be used for bracket racing and street use (50%/50%). He suggested the 9.5" Street/Strip converter. I asked him what it should flash at and he thought 3800-4200 rpms. Will this be streetable (worried about heat and drivability)?