I have a ready to race P1 chassis looking for a motor or race parts for a stock Sprint motor.
Last winter I bought a large parcel of HD/Aermacchi parts to build a 350 sprint..now completed ,I have a mostly complete 350 motor that may be a good start for you..this is the ashtray head not the knuckle..If you.re interested call or text me..705 840 8752…dave
George Oegar has a complete bike for sale. If that not what your after maybe he knows of a engine.
If that does. Ot work I know a guy Mike Mefford in Wisconsin who has a bunch of Harley Sprint engines he may have a Original one. Bert Lilley #98