i got an 87 monthe carlo ls that came with a 305 with the 4 barrel quadrajet and i'm lookin into an engine swap. the question is what are my options. i'm wanting to pull an engine from a junkyard cause it'll be cheaper and i wanna rebuild it with performance products anyways. i've heard of the traditional 350 but i also heard of a 400 that came in some of the older cars. so what kinda motors do i have choices of and what cars or trucks can i get tham out of?