Hi Dave We have a guy at our club with a smit tug when he built it what was in the box went on the tug, so the fixed nozzles, props, and becker rudders are standard fitting, he fitted belt drives. he do's not have any probs been the stern boat, all he do's is put a little something on the stern of the tug to stop it lifting when going a stern. Get him to come up to Balne Moor m.b.c. to one of our towing events.
Regards
John.