$3,800 is more than I paid for both of mine but even combining the best of both I expect to have $1,000 or more in patch panels before I have one solid body.
Running is nice, I drive one of mine regularly. However, since all the running gear and underneath stuff is the same as the pickups (except the sway bar) I wouldn't pay a premium for that stuff. Spending even thousands more for a clean and complete body will be money ahead when you are done.
My two cents.