howdy, i posted a few days ago about an idea to do an older gm truck with an ls1 engine. well, my thoughts have changed and now i'm wanting to go with maybe a 5.3L in my s10. only thing is, i'm terribly confused. it wasn't until i started going so in to depth with reading about this that i didn't understand. can anyone explain to me what i'm going to have to do in basic terms to give me a better idea?