Thanks very much for your reply.
I don’t suppose that there is any other air cleaner/filter combination suitable for a modified 302 or 331/347 which will fit under the stock, closed hood (otherwise you would have fitted it)?
I am surprised that the Weiand Stealth and stock air cleaner will fit under the stock hood since the Stealth is almost an inch taller than the Edelbrock Performer 2121 which was a pretty tight fit. I guess a lot depends on what air cleaner is fitted.