I have a W140 500SEL LWB and need a transmission for my R129 300SL.

The transmission is 400 miles away and due to some weird circumstances (long story) I can't have it shipped.. must go to pick it up.

I am going with my 500SEL. I do have a trailer hitch, but don't want to bother towing a trailer if possible.

The transmission is a 722.500. Will that transmission fit into the trunk of a W140?

Bonus question: If it doesn't fit and I instead pull the lower rear seat out and put the transmission there (wrapped in blankets of course), can I fit the rear seat piece into the trunk?

As much as this is a long shot to ask the question, I'm not going to be entirely surprised if someone here actually knows the answer

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'83 300SD 335,000km (207k) mi SOLD
'87 560SL 163,000km (101k mi) SOLD
'86 300SDL 356,000km (220k mi) SOLD
'92 500SEL 250,000km (155k mi) SOLD
'90 300SL 140,000km (87k mi) SOLD
'01 S430 260,000km (161k mi) SOLD
'03 SL500 167,000km (104k mi) SOLD
'07 S550 4MATIC 235,000km (146k mi) SOLD
'07 GL320 CDI 4MATIC 348,000km (215k mi)
'13 GL350 BlueTec 4MATIC 170,000km (105k mi)
'14 SL550 72,000km (43k mi)