Looking for my Duster's fender tag and original 225 engine.

Looking for the missing fender tag for my 1974 Duster , VIN VL29C4G129869.
Also looking for the original motor, a 1974 slant six with the above VIN stamped on it.
Any and all leads welcome. Both are probably somewhere in the Portland OR area.
Finder's reward will be paid! Thanks.