A413 Transmission Upgraded parts

Hi, I'm trying to souce upgraded parts for the A413 tranny. Transmission is built but only with stock clutchs and hard parts. I'm looking for steight cuts gears for the transfer, pinion, and ring gear. For the input shaft I'm looking for the billet A904 one, also an output shaft but heard they don't break that often. Then the drum I'm looking for the billet front and rear drum that fits the A904 clutchs and steels.

I know there has been group buys in the past for this stuff but sadly I missed out on them. Looking to either get a group buy to have some made or buy some extra's people have laying around.

For the people that want to know, I have an a413 fully moded with pretty much every mod that is known except for an transbreak working on that.

Short term I think I'm ok for this year with making 500hp but its the coming years that is the issue and need something to survive 1000hp