David,
Just checking -- you probably already know this so tell me to shut my pie hole -- will you be working your truck or just driving it around? If the latter, you know you don't really need a 2-speed, right? 2 speeds give greater ability to start off under a load. They don't give any speed advantages on the top end.
Just trying to save you some hassle if all you are wanting to do is just drive around. If you are going to haul stuff and understand all this, then by all means.
I only bring this up because I learned this lesson AFTER going through the hassle of finding a 2-speed and rebuilding it for my truck.
Respectfully,
John Milliman
Oh -- I like your log in name -- are you a '53 or a '47 driver or mech?
(Sorry about using your account, Peg

)