Presently, a 1996 Toyota 4Runner, Possibly soon a 1989 Mercedes 420SEL
So I have this 420SEL that I am constantly bouncing around regarding what I want to do with it. The engine is likely shot based on some information I obtained about the car. Of the slew of commonly available American V8s, what can be put (without too much modification) into a 420? I was thinking in terms of a Ford 4.6 or 5.0, or a Chevy 5.0 or 5.7. If possible, I'd like to retain the MB transmission. What is available?