Is anyone using a 904 behind a GIII Hemi?

To most, built "correctly" means throwing an *** load of cash on shiny parts because "that's how it's done". Necessities are a billet low/reverse servo kit, 4.2 lever, rigid kick down band(preferably red lining), and correct clutch pack clearance. I left clutch material out intentionally, because I know I will get slammed on my beief (or what I know has actually worked for me). Even clearances are a thing of discussion. As a rule of thumb, .010-.012 per friction. You can use the thin forwar friction plates in the direct drum to get 5 discs in there. Usual rebuild techniques apply. Inspect everything very carefully. Last, but, not least. A good valve body. Either store bought or a decent home prep with a trans go kit.