I am currently building a drag inspired T also, Here is the one im using for the roll cage ideas for 2 seats. Not to mention it will be safe if anything ever happened.
I recommend approved padding in the head contact area. Not the foamy insulation stuff - that is ineffective.
Forgot about this thread. Heres an update. Running a hilborn set up now. Posted using the Full Custom H.A.M.B. App!