I am crrently renovating a 1977 2nd Gen IROC racer seen here at the front being driven by Richard Petty as Daytona and Unser at Atlanta, mine is the beige car. Gotta get it looking like that! Its 99% complete with all the right bits including Mooneyes drysump tank etc. Trust me the build on these Banjo matthews chassis is tank like.
https://www.youtube.com/watch?v=lLr93R4BzA8...feature=relatedhttps://www.youtube.com/watch?v=doyCfkgUoHk