As the 405 was engineered for three point belts, I would think converting
back to 3-pointers would be easy.....although I haven't looked at it.
My recollection is that the 405 S was the only 405 sold with the passive
belts. the 405 DL and Mi16 had 3-pointers.
PJ's auto parts in Maine would no doubt sell you a set of used
three-pointers at a reasonable price....tel (207) 353-6322....fax (207)
353-5631
Mike Savage