If you hold your control key down, and roll your mouse's scroller wheel you can get the pics (and post) to get really BIG...or really small.
I'll say that I am not a fan of clips installed like that, but...
When I get the pics large, it looks like the suspension will fit in the frame, I don't see why you couldn't build a boxed extension onto the sides of the frame and bolt the C member on using the existing Toyota mounting holes.. I would put the throughbolt support tubes through the frame, to keep from crushing it. And box the frame rails on the inside as well. As long as you have clearance for the upper control arms, and can maintain the original anti dive angles, I think you'd be ok.
I worked on a 40 ford pickup that had a complete Toyota frame under it, with a SBC/th350...All of the suspension looked very stout and it drove really nice.
my signature lines...not really directed at anyone in particular..
BE different....ACT normal.
No one is completely useless..They can always be used as a bad example