1974 D100 frame off build up

I have an idea for completely revamping the front suspension on these trucks with aftermarket parts. The only sure fire thing so far is using van LCAs to lower the truck up front and you need custom upper control arms to correct the camber. I dont know if custom uppers are still being made by people still or not, but I found interesting information that will let me experiment with the lower control arm, and spindle replacement. The Mustang II spindle uses the Chrysler upper ball joint on the upper and lower control arms. That ball joint is the screw in K772. The lower control arm for the Mustang II using radius arms/tension struts is the same shape as the D100 LCA, but is 4 inches short. There are companies that make aftermarket tubular LCAs for both styles of the Mustang II LCA, using either the stock spring, airbag, or coil over mounting. What I plan to do is get the tubular LCA for the Mustang II that uses the radius arms/tension struts, mounts the coil over, and lengthen it 4 inches between the ball joint and the spring perch mount. I already have my custom radius arms/tension struts that will also work on this. If the bushing of the LCA fits the crossmember of the D100 we are in business. That is the only part that I dont know the measurement of so far, is the width of that bushing. So both the upper and lower control arms at that point will have the K772 ball joints. The Mustang II spindle will then fit, and it looks similar in height as the D100 spindle. Outer tie rod matching will be fairly simple. The interesting thing is the same company I was looking at makes spindles, 2 inch drop spindles, and spindles that use the Gen 5, Gen 6 and Gen 7 Corvette sealed bearing and brake caliper mount. You could drop the front of your truck 2 inches using stock upper control arms and stock Mustang II brakes, or using tubular UCAs use the Corvette brakes. You would need to switch over to 17" front wheels with the Corvette brakes.

So with this, I might be pioneering the D100 front end power up that doesnt involve replacing the front suspension crossmember. Someday, when Im well off, Im going to just fabricate these things myself and add them to my website. I want to help these trucks live longer, there is a lot of love for the A body and the rest of the Mopars, Ill help fill in the blanks for the Mopar Muscle Trucks.