I will tell you this...
Long ago I branched out from Mopar only to other brands added to my mix--and after several years doing that I can tell you for sure--Mopar guys are about 7% of the entire aftermarket business and that is a guess on the high side.
I get 100 phone calls or emails about parts
85% Chevy
5% Ford
3% mopar

They all want in this order:

gaskets
roller cams
MSD
Roller lifters
Rotating kits
heads
Rocker arms
oil pans
slicks

The rest are BS calls and just trouble shooting and shipping screw ups--refunds-returns --warranty request on 4 year old rotating kits--and valves to replace the ones they bent
and last but not least--3 calls a day on wrong push rod length--apparently folks can't measure--I blame public schools but that is another deal all together
Mix in a few --It won't fire with it is making an odd noise or that is my wifes credit card and she said it is OK---and you have my usual day

You guys can QUIT wanting more/better blocks--ain't gonna happen
Maskin is pals with Russ at Indy and they must have a pact--Maskin ain't messing with Russ and the maxx block deal or making Mopar heads
If he would our problems would be SOLVED and there would be beautiful perfect Mopar blocks

Truth is there are not enough Mopar guys on earth to make it worth doing--so...