Single mass is only 5 lbs lighter 21lbs as opposed to the 26lbd duel mass, but with the single you have the option to shave it down to 18lbs, I didn't bother. Tranny went in like the stock one slightly easier actualy, only the 4 main bolts lighn up so less haseling to deal with while under tha car finding the new weird angles with an asortment of swivels and extensions, biggest PITA was the starter, had to remove the charger just to get to the wires, thinking linkage may be another PITA but only tried with e36 linkage but afraid to bend the aluminium rod to make it work, next I'll try with e30 linkage before I attempt to bend or should I say snap that alum rod.
"They say ignorance is bliss..... I don't know what the Fu*k that means but I'm pretty happy". Ricky Trailer Park Boys.
Current Mods....X-Brace, Stromung Cat Back Exhaust, 17/225/45 M3 Replicas, HotBits Adjustable Coil Overs, 40% LSD 3:91 Diff, E30 Gearbox, Boosted.