I've got a kit similar to yours but got it off eBay. Not sure if I'm going to use it though. Been looking at several different steering boxes that I've round up to "hold it up and eyeball it" on the frame to see what hits, fits and go from there.
428! I'd love to find that size crank or an aftermarket stroker crank for the FE engines. But the more I think about this, the more I'm leaning towards a 460 block with all new stroker parts to get the cubes between 500 and 600 cubic inches. It can be done for around $1500 for the rotating assembly. I doubt anyone could do that with an FE motor.
I'm still trying to locate a front D60 for my '75. I've already got the rear D70 out of a '73 Super Camper Special. The whole idea with this Highboy is to make it something Ford never offered: an F350 Highboy.
I've heard of rumors they did have such a truck but not with the HPD60. The 60's I heard about were closed knuckles and low pinions. But very, very rare trucks and most were the crew cab trucks.
