money is no object

So I’m building my first brushless super truck and need a little help. (e-maxx) I want the best out there and I don’t care what it cost. I’ve got a list of things I already have, and intend to buy below. Here are the Questions. The diffs, hybrid bulkhead/diff , UE bulkless, 6/8 spyder, or what? The trans, full or half case any benefits either way? The spur/slipper, the best out there? Does anyone make metal trans output shaft gears? And finally, Some good steering blocks I’ve got integy now but don’t have any luck with any of there products.

Lehner(LMT) 1950/8
BK 20120
g-maxx carbon chassi
lundsford titanium pins
titanium turnbuckles
gen 4 servo saver
flextech suspension arms
ubec
UE titanium center’s and cvd’s
cnc trans case
x-brace motor mount
jr servos, radio, and receiver

The diff question is the one I'm most concerned with.