piston for 1973 wr/cr450

my 73 husky cr 450 is on its last piston oversize 84.92mm (only goes to second oversize) does any body know if you can go over this size on the bore and is there a piston to fit this? the only source for pistons for the 450 i could find is jeff bens but only goes to 84.92mm. could a piston of the size required for a different bike or manufacture be made to fit? any help would be great

Try Rick Horvat I just recently bought a sleeve for a wr400 from him he's really helpfull and a good guy to talk to on the phone from what i've heard he knows about as much about vintage husky's as anyone would want to know he had a new sleeve and gaskets for my 1975 wr400 and an exhaust pipe for my 67 250 cross he's at rhorvat@clevaflex.com and his phone number is listed in the parts resource part of this website hope this helps