fumes?????

I've been driveing my car around town a bit, it's not totally done but fun to cruise anyway. My car does'nt have the rubber seal kit in it yet but does have the hood cowl seal, when I drive the car it smells like gas. I ran my exhaust all the way to the back hopeing this would solve the problem, but it did'nt. It does have a hemi hood scoop on it could it be the gas fumes from carb coming back in to the cab? Has anyone else got this problem with a hemi scoop? I was thinking maybe carb is getting to much gas but it seems to run fine and the plugs look good. The carb is a 680 quick fuel new. On a 318 with a stroke kit in it, in a 68 dart.