I didn't see easily from that video that the black Firebird that BB was racing but I think is KC Firebird. That car is very consistent and sits low in the rear and higher up front., somewhat like an older style gasser. The Firebird hooks street or strip and is quite often in the winners circle. Its very common to see loose bags of lead shot in the trunks of street and no-prep track race cars.
Ozark Raceway Park had a racer dump a bag of lead shot all over the track after the bag busted last year. They had to cancel the rest of the event, scrape the track and re-prep it. Didn't seem to be too happy about it, either.
