That’s the problem skrews, there are a limited amount by of intakes (& heads) avalilable and MoPars are now gone. That’s 2 for the carb guys. Then there’s the RPM, Indy and the Chinese knock offs.
Plus they cost money The intakes that is. Plus I have a number of mag cores, "a couple of which run" and might be easy to freshen up. Plus I have some experiments I want to do with EFI and that does NOT include "magnum" intakes, beer keg, or otherwise.