for the "idle" trans we use a flat towing trans circulation pump to keep the guts of the rear trans wet while in neutral with the engine off.
for short distances after being recently started and shutoff he should be fine since its mostly a racecar.
the Tq converters will stall as much as they need (slip) to equalize the load depending on the traction/load, that the beauty of a viscous tq multiplying drive. when launching the rear see's everything (one reason our 25.3 chassis is using 4x4 LCA hardware/heims and extra bracing)
so yer probably right the 1-2 did it in. but keep in mind that 400ftlbs is plenty to break a stock IS when the shock load can have the converter multiplying that up to 1000+ for a split second. plus without the rear driving a SC yer already 50+hp more than the front engine just from the crank not spinning it.
you may want to look into the 3.71fdr 80e though i dont think it will clear your unibody rails, thats just a mallet and a few licks away....
looking good guys.
kinda make me pissed we havent gotten more done on the 442 in the 14 year build/rebuild/rebuild lol