Send me your DCCD center and do it up...I could use a spare for when I do fwd and rwd burnouts
Welding should be fine. I welded the center diff on my 5-spd and it never failed...two diffs, 1 driveshaft, 1 DSS stage 5 axle and the tranny did though
I wouldn't have gone 6-spd on this personally. Lightweight car with 'low' power, the lighter 5-spd wouldn't have issues. Besides, anyone who know's how transmissions are rated for vehicle use knows that it's based on tq loading and vehicle weight...thus load on the transmission. 300whp in an 1800lb kart would have been FTW with a 5-spd. Now you're tossing in a bigger, heavier and more expensive 6-spd. Adding weight to the rear of what will most likely already be a tail heavy mid engine setup.
Just my $.02 from an automotive engineering standpoint,