I have a club member who just recently purchased a twin 160 ASP engine. My question is: does he need twin glow plug drivers for the remote glow driver plug or can he attach both plugs to one driver? Thanks

The standard way on an OS 160 twin is to wire the plugs in series and use a 3 volt source. A hot goes to one plug, the engine is a jumper, then out of the other plug back to the source. (I guess this is standard, it's the way mine was wired. You could run separate 1.5V wires in parallel from a battery of that voltage. Probably separate 1.5V batteries would be better.)