Is that SDL ASD differential the same style case differential that’s used in a w124 or a r129 ? I’m just asking because Jason does have both of those rear ends in his shop. If it’s truly not that much body work to make the subframes mount in, then maybe it is worth consideration. Jason sounds like he’s got his mind made up though.

I know that nothing felt as “planted” as my 1992 500sl r129. But does the R129 and/or w124 rear suspension utilize the anti-squat / anti-dive technology? While the trailing control arms result in different wheel angles at different spring compressions, they do operate a bit like they have an upper control arm as the axle is able to rotate on the control arm, unlike a w123 or really any 6 cylinder trailing control arm. Since the 6 (and smaller) cylinder cars before the W124s didn’t use the anti-squat technology, I wonder if the w124s did.

Maybe a bit of an overview of the anti-squat vs standard vs r129 vs w124 rear suspension would be worth reviewing here (while Jason just welds up that subframe anyway).

__________________
Past mb: '73 450sl, '81 280slc stick, '71 250, '72 250c, '70 250c, '79 280sl, '73 450sl, parted: '75 240d stick, '69 280s, '73 450slc, '72 450sl,