I think that the 3 bolts that you have would be fine as long as you use a head stay. You could make a crossbar that is removable, so engine removal would still be easy. I threw in a picture to ponder. Weld on some little stubs to the swing arm with flanges on top. Then make a crossbar that would pickup the head stay and bolts to the flanges. The crossbar would be removable (4-bolts) and then you would have full access.
Something to ponder
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2005 Hammerhead 150
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, Custom Exhaust, 10G rollers, 1500 Contra Spring, 2000 Clutch Springs
Just added - 2007 Joyner 250 SV - Let the fun begin
4-Dirt Bikes, Baja Bug and enough toys to keep me in the garage and out of trouble.
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