So kinda wish I woulda documented this a tad better, but its been a mad rush to get it done so I don't have to drive my kids around in an 84 GTI any more. I have a 2007 c2 stg2 Turbo Rabbit, been boosted for about a year. Had the differential fail and punch through like the o2o usually does and did some research to find the most cost effective way to handle the situation. The o2j looked like a decent option on paper so I snagged one out of a wrecked 2004 1.8T New Beetle. I had been running a spec stg 2 clutch per c2 and NGP's recommendation however my pressure plate failed and my clutch started running hot shortly before the differential failure so I opted to use a southbend stg3 with single mass steel flywheel for the 1.8T/o2j saving 8lbs of rotational mass. Also picked up a Quaife LSD which is an off the shelf option on the o2j unlike the o4a. Due to time constraints I will be installing the LSD later when I take the car back down to build the bottom end of the engine. I installed the shifter from the o4a on to the o2j and used the factory linkage. I had to fabricate some adapter brackets out of aluminum to mount the linkage bracket to the transmission. The axles presented no issue using all of the rabbit parts and everything pretty much bolted together problem free except I've come to the realization one of the axle seals is leaking and needs replaced, waiting on that and 1 axle bolt and the car will be back on the road. Everything I've had the ability to test works perfectly aside from the leaking axle seal on the trans.