I just had a Mustang II front end installed in my 46. My truck already had a V8 installed. Questions have come up about it’s safety. I feel it is safer than original. The front of my frame is boxed up to the cab. You have to box the frame to put the crossmember in the frame. I now have 11 inch disc on the front. The truck rides and drives a lot better. The original question was about clearance for the 6 cylinder motor. With all the folks out there selling Mustang II front ends I’m sure someone has addressed that question. The only thing that I found you have to ask is “ do you need a strut on the bottom control arm?” If you use original Mustang II control arms and some tubular control arms you have to have a strut or brace on the bottom control arm. The Mustang II should drop the front end 2 to 4 inches. You can stiffen up the front end for loads by changing the spring rate. I had 400 pound springs in mine and it was like a chuck wagon. I think I dropped down to 325 pound. The old 6 is 100 pounds heavier than the V8. Do your research first. Talk to these companies and they should answer you questions before you buy. Good luck.

1946 1/2 ton