Hey guys,
How much headache would it be to swap my 46 4-Speed Crash Box for a 50's SM420? I have access to a SM420 and would really like to get rid of the old Trans next summer. What is the model number for my 46 4-Speed? I've looked and looked and the model number has alluded me. My truck is a 1.5 ton.

Thanks

Last edited by Lend-Lease 1.5; 01/12/2015 4:06 AM.