Couplers

[timp1167]

What size couplers do I need for passenger cars? They are SP Lark cars. The couplers they came with were trash and I would like to install Kadee automatic magnetic couplers but have no idea what size

[billgiannelli]

on the Kadee web site they have drop down menu option "conversions" and there they list Bachmann products (among others) and show what size to use. I hope this helps.
Bill