I think it will look funny either way you do it, but probably less funny looking if you stretch the doors too.

Personally I don't like the look of the one in the link above, or even a full 4 door conversion. It just looks wrong, because they never made them like that. But if the doors were stretched too it may look OK?

•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-