older truck vs newer truck

[JEastonjr]

Hi folks, New to the world o Rawze.
Thank for accepting me into your world.
My name is Jay and I'm wanting to be OO.
My question is with all the problems motors are having, Would be better to get a older truck with a few miles (800 to a mil) pre emission and spending to rebuild it.
I'm thinking Pete 379 cat c15 pre emission twin tubro. A well maintained truck.
I hope I'm being clear enough.
Want to hear all comments good or bad.
Thanks