Got a composite main body. No need for the spacer. Had a phenolic on the Holley before this DemonAn air bag in the passenger rear spring. Undo the front sway bar and some sticky tires will do most of the trick.
I would advise the use of a heat insulator gasket between the carb and intake (about 3/8" thick). They are $20 new from Edelbrock with studs. Holley and Edelbrock carbs really respond to them. The fuel you noticed out of the rear vent could be from the heat soak.
Interior really cleaned up nice.