80-90 roller 360 question

I agree with 340 mopar here. He's on it.
Also, the cheapest way out of building an engine is what MoPar will do. If they can get 1 part to cover a wide verity, they do it. It would be stupid otherwise.
Hence the reason you find the same engine and front ends and rear ends in all there vehicles. Chysler purchased alot of companys and there stuff finds there way in there. The 1 exception was jeep and the in line 6. (I'm sure other engines as well, but you do find all the Chyrsler corp engines in everything otherwise.