I am a competent metal fabricator and I plan on building a H1 hummer.
I had the opportunity to buy a good condition Hmmwv A2 rolling chassis. I almost went for it but I didn't. My reasons:
Independent suspension = drive off a 1 Foot ledge and start balancing on 2 or 3 wheels.
Portal hubs = yes they look amazing and are sweet for off road use. The con (for me) they lower your final drive ratio (higher rps on the highway lower top speed). This is very important for me as this vehicle will be my road trip machine and will see a lot of highway driving .
Parts availability = I plan on modding the engine and transmission. The factory half shafts are not meant to handle 400-500 horsepower and a ton of torque. Upgrading these costs a fortune. The dodge is sporting the proven dana 70 in rear (quite capable of easily handling that kind of power) and the dana 60 up front (an amazing axle except for the garbage unit bearings which I plan on replacing).
Cost = I have to look at...