I have seen inthe later yrs 60s a van with the offey and was a 3x1 intake. But as for the clifford yes it is a little bigger But it should still fit. But for as big & heavy the van is I think I'd stay with the offey intake. Mainly because it has better low end power & tork. The clifford will work But it is & was designed for mid range & upper end power. And I'm not sure what you have in mind for other engine mods. cam,head work, carb. Hope this helps.}[oooooo]
God doesn't like ugly.
