Originally Posted by Gdog 5651
I don't know about 1 3/8" square I used 1 1/4 tubing on my BB and it fit perfectly. Gene
Mine is definitely 1-3/8".
When I couldn't find 1-3/8" I bought 1" square tube and 3/8"x1" flat stock and welded the flat to the square. It fit perfectly but took forever to do. Scrapped that plan and had c channel bent up.