Hey David the CCX manual says 289-428 Ford and small to BB Chev. I don't know which is the larger dimensionally.
I sent you this link to the FT powered HiTech, the FT's are also common in Everett Morrisons. I think you could shoehorn that in there.
Replica/Kit Makes Replica/Kit Makes | eBay
Your footboxes may be a little tighter to the exhaust than a CSX style frame but I think it will go.
