Spacing between air cleaner studs Six Pack

Can anyone tell me what the spacing between the two air cleaner studs on a 340 six pack air cleaner is? 440 six pack is the same air cleaner stud spacing? How about the spacing between air cleaner studs on a dual quad hemi? I talking about the large oval air cleaner style ones.

I'm looking to see if I can adapt a stock Mopar oval aircleaner to a 2x4bbl tunnel ram setup, but I don't have any to measure. Help much appreciated. Thanks!