Coil on plug modules, need to choose one

I'm gonna convert an ancient engine from a distributor to coil-on-plug. I've done wasted-spark conversions but this time C.O.P. is the way to go.

The engine is a Rambler (AMC) 195.6 OHV, inline 6, 4500 rpm max, 3.2 liter/125 hp. Want to use available OEM modules, not expensive aftermarket.

Most COP modules are tall and skinny, for overhead cam engines. Mine's pushrod, so the plugs poke out the side.

What I need is short stubby modules. Anyone have any suggestions?