Welcome to the board,not sure if i can answer all the questions but i do know you can get a 454 crate eninge,not sure on the cost.and you can make about any buckets fit,i have a set out of a 2001 dodge with the center console which you could leave out.The newer style truck are popular swaps for these trucks. I would recomend some type of exhaust on it.I dont know anything about bags but would geuss around $2400 or so,i am sure someone else can answer this question.
