I have a few mtrs in a box that might work for your aplacation,could send you pic;s if I had your email,also have a good running g23 that came from zenoha set up to run methonal,availiable at most race shops, that mtr weighs 40oz with the pitts muffler, the others are converted wacker mtrs,The weed mtrs are cheep to buy,some discount tool places sell the weedeaters for 50bucks,tear it down and
bingo. craig