Thanks grumpy, I found the post by Joe Carroll and an informative read.
I asked at a shop this morning on my rounds if it was possible to adapt a breakerless module to the early models and was told no, definately not.
Here's the post by Joe if anyone else is interested.
Its easy to change it to a breakerless setup, Usually I grab a coil from either a 81 onwards 3.5 or a 375 with the module built in, and bolt it right on, only you have to remember that when you grab the coil off the motor you also need to grab the kill wire as well.
Sometimes I leave the points here and cut the wires off under the flywheel and bend them out of the road and sometimes I take the whole lot out.
