Hi to whoever can help

We are working on a project which involves a 997.1 tt 3.6 engine and would like to know if anyone knows what make or who are the o.e internal parts and bearings on these engine manufactured/supplied by?

I believe the standard pistons are manufactured by Mahle

Does anyone have any info on stuff like

1.) The crank bearings
2.) Conrod bearings
3.) Piston Rings
4.) Seals & Gaskets

Any info on where i can locate these parts would be helpful obviously Porsche Dealer is the last resort

Thanks