I agree with Tim, as long as you duplicate the bore sizes of the pipes throughout whatever you fit you'll be OK...
On all my bikes I drill and tap the crankcase drain plug 5mm dia. through and fit a 5mm allen screw with a fibre washer to the plug...That eliminates the requirement to keep removing and replacing the drain plug, which carries an inherent risk of the thread in the crankcase failing...Ian
Maybe a better alternative would be a tap with an electrical cutout. My brother and son both have them on their G3L's which especially my brothers will sit for months without use as he is abroad. The ones they have are from Kingpin components, very nicely made and dont look out of place. I have no connection to them other than having fitted them and being very happy with how they work.
