Since the forks need to be longer (4 to 5 inches) I opted to buy a new front end already extended +4". BMS Choppers push American Suspensions for their front ends - so that was the route I went. For $2050, BMS sold me this "Black Mamba" style front end along with a couple custom adapters to fit it to a Warrior frame:
To fit the front wheel on the new 3/4" axle (which is smaller than a stock Warrior) I had a spacer fabbed at a local machine shop.
From left to right: the new axle, some sleeving material (to center the wheel), the custom spacer, and the bearings.
Next, comes fitting the stock size rotor (which actually is about the right
The main problem to overcome is the stock position is off 1/2 inch from lining up with the caliper.
This necessitated more machine work to fab a custom rotor spacer:
It worked out perfect!