Carson, that is the the same plans I have for my 51! a 383 with Fast EFI and a TKO (probably a 500 as I am building the 383 for TQ, not HP) I am thinking a AD truck will require the front shifter location to put it in a stock location. The cowl is not as deep as a 55-59. There are a couple of trans places that have the front shift as an option. But since I am a year away from measuring this, its on the back burner.
http://www.5speedtransmissions.com/tr-3550.htmlIf you have the SB mounted in your frame with your cab on ( I don't) Measure from the trans end of the bellhousing, front shift is 7" from that point, mid shift is 12.65". I would be interested in knowing too!
I will be following your build!
