The only 'non-stock/OEM' items are the flywheel, adapter, starter, clutch and pressure plate.
The transmission was recently rebuilt with a new 1st gear (as my original one was worn), updated 1-2 shift collar with updated synchros, 0.56 6th gearset and a 4:1 Torsen. I don't plan to drive it any different than I normally do with the automatic, so I think the stock gears internals should do just fine.