u/GrapeAggravating3498

Hi everyone, bought this car nearly a year ago, it’s a mk5 gti, 8p s3 cdl swapped with forged pistons and rods and tm400 turbo running shown power. I stripped 5th gear but had 5th and 6th slipping in map 3 and 4 for for a few weeks leading up to that. When I got the gearbox out seen the flywheel is finished clutch seems okay but I don’t think it was rated for my torque. Any recommendations on gearbox upgrades of a mk5 gti gearbox not s3 as it has to be fwd, and clutch and flywheel recommendations of the 418ft lbs torque range. All replies much appreciated