I've seen the P4532587/P4532731 Mopar M1 piece, was there a similar intake made without the fuel injector holes by Mopar or anyone else?

Thanks

I believe Edelbrock makes one also. You can also change the heads to fit the LA style intakes.
http://stores.hi-potek.com/ind-360-i4-3m-indy-4bbl-intake-manifold-5-2-5-9-magnum-engine/

P5007380, P5007380AB, P5249501
Single plane, magnum heads, carbureted...... came on some Magnum headed crate engines.

Thanks, what are the differences between those 3 intakes?

I was told part of the delay with the release of the single plane TrickFlow intake was they wanted to make it so it could be used on LA or magnum engines but looking at the pictures I don’t think that plan worked out. The Speedmaster dual plane is set up that way but that intake sucks even after porting work.