A 49 sounds good to me too.
It's pretty simple to work with the original frame and just change the drivetrain and parts you want to.
A whole body swap to a different frame sounds like a lot of work, and for the most part I don't think it is a good idea.

As a side benefit the cab, fenders, and all that stuff fits the original frame pretty nicely.

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-