Your pic didn't show up for me, but I think that is a Ford block in the video and the spider is an aftermarket piece from Comp cams. Process should be pretty much the same for a older Mopar block using the later factory parts though. But I doubt it is a straight drop in. You would need to make sure there is clearance around the dogbones for them to function correctly, and I might consider brazing in mounting pads where the spider mounts into the block to make sure it is putting even pressure across the length. The valley isn't necessarily flat and even. Then there is the issue of lifter bore height and making sure that the band isn't uncovered. A solid roller of that type would negate that requirement but I've only heard of DIY solid versions converted from factory lifters by putting in a spacer to restrict compression of the piston. Since it doesn't seem so common, maybe it's more complicated than I'm thinking, or not worth the trouble considering conversion lifters can be had for a couple hundred bucks more than the OEM parts, which are lift height limited.
