FMU's work better with supercharged setups. To do it right you would want standalone and with that done the motor still isnt great for boost. The only swap in my opinion that makes sense on a ranger is going with a turbocoupe setup electronics and all. When you say 4 speed im assuming you mean the auto 4 speed because I thought all rangers had a 5 speed manual. If it is auto thats a whole new set of problems since it is vacuum operated.Why bother listening to these crazy bastards here anyway? Most of them think its fun to completely ruin a car by putting a giant system in it but then tell you its dumb to turbo it. Do what you want but I highly suggest going to another forum for information.