I am just getting statred into On30.  I have collected a large amount of O scale (Lionel, MTH & K-Line) equipment over the past 4-years, but never created a layout because of a growing concern about the look of three rail track.  I am now looking to sort out all of my questions before pulling the trigger on a change.

Your On30 engines and rolling stock come equipped with E-Z Mate Mark II couplers, which I presume are the same as HO couplers.  Since On30 this is 1:48 scale, can I easily convert the couplers to a product with larger knuckles such as Kadee's On30 or O guage couplers?  Will these fit into your existing gear box without a major retrofit?

Thanks . . . . Swiny