TCI heavy duty 904 rebuild kit will make tranny handle 550 hp

CudaFactHackJob said
I'm tempted to put together a kit with all rings gaskets and seals; filter, duprene pan gasket, thick thrust washers, all Red Eagle thin clutches, kevlar front band. And maybe pump bushing and direct drum bushing.

I would be up for one of those kits. Have you gotten parts from transmissionbench.com before and do you use Sonnax parts when available?