SO I attest the 3.07 would be what I would be looking for? I was made aware that the 86' and up had a deffenret mounting due to the heatsink fins ergo I would need something from 85 down (Gen 1).

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MB roster
'85 500SE euro Ratrod
'92 500E's x2 / '94 E500 stored
'91 560SEC w/43K stored
'92 Cabby 16V OE 2.1 AutoX car
JDM RHD cars now.