crown vics I believe uses something like 14 lb injectors I think it says on the little stamped area of the mass air unit all mustangs came with 19 pound up to 95, I would certainly get the stang wiring comp harness and injectors if you plan to use it with the vic motor it takes well to mods 89 mustang is the best one a9l if its a stick or a9p for auto computer etc no air bag wiring to mess with etc ford or fms makes an eec performance and wiring guide that is just great might help you with some of this I found it here http://www.amazon.com/exec/obidos/AS...799926-8783261