What microtrains couplers to fit Kato AC 4400s,SD 90s. and early SD 40 and SD 40-2 snoots?

Can anyone tell me what part #s I need for Kato AC 4400s,SD 90s. and early SD 40 and SD 40-2 snoots? The stock Katos just ain’t cuttin it.

Tom

Try here: http://www.micro-trains.com/conversions_n.php

Rotor

Thats all I need. Thank You.

Tom