Do a search on youtube for dual card 235, theres a fellow that posted a few vids of his home made dual carb intake out of a couple stock intake parts.
I have a 235 presently sitting on my run stand, awaiting swap, that's got the 3/4 cam, dual Fentons exhausts, dual Fenton intake w/dual Carter/Webber 32's. They came OEM on some small Ford imports (Escort I believe) and had a Mototcraft part number.
Runs great on the run stand, the 216 it's supposed to replace just wont die
