can any 1 help or give some advice,i have this 89 rs turbo with 2.1 16v turbo already fitted there is no ecu or engine wiring loom and have been told that a fiesta rst ofab ecu with frst wiring loom will run it,is this possible or not i have a ofab ecu but no wiring so will it be worth me buying a frst wiring loom or not all help is greatfully recieved