Rotisserie Page-3 Be sure to look at the base photo on previous page, gussets need to be installed at the upright to the base rail. Gussets measure 5 3/4" along the base and vertical and cut @ 45, 1/4" thick plate. Materials list shows angle iron used, that is not correct for this application.

Rotisserie Page-4 Be sure to look at the base photo on previous page, gussets need to be installed at the upright to the base rail.

Rotisserie Page-5
You can drill additional holes in the plate to have it fit 67-70. The holes shown in the plan fit 64-66.