Msd billet distributor replacing original electronic ignition distributor

Hi everyone I had my 1974 dart sport 360 built by sturdy racing engines in millbank south Dakota ended up dynoed at 515 hp and 567 trq they put a billet run ready or race ready distributor on it and I'm really close to starting it in my car for the 1st time builder told me I dont need the electronic ignition box on the drivers side fender he said all I have to do is plug the distributor in and hot and neg to coil is this correct and if so what do I do with the 4 or 5 pin plug thanks for any advice