ORIGINAL: RCIGN1
.It could be a little lighter with a CM6 spark plug and shielded wire, eliminating the outside spark coil and associated lugs on the case...The inside spark coil would be lighter too...

3 lbs 14 oz maybe ?
Now you're starting to make this real tempting...........All that's lacking is the 4 bolt prop washer to match the DA50. Same props, just an extra 4 or 500 rpm's.