Thanks all. lt1s10 helps a lot knowing Va Inspection rules and HenryRifle says cats alone are too loud and maybe I will look into the whoosh-mufflers as Streets says, but now I know I have to have mufflers and maybe the high flow cats are optional for a '76 SBC in a car titled as a '29. Thanks for the info.

Don Shillady
Retired Scientist/teen rodder