I put one together for Bob {Prosport) in the green Duster he had for a while and it held up fine in a 10 second car. The case was pretty beefy with nice thick main caps. Just make sure you use the solid crush sleeve then you have the strongest 8 3/4 you can build.

Gus beer

64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60