M38A1 front pulley?

[Frank v R]

Jack ,please note that the cdn2 & cdn3 have the 3 groove pulley, all U.S. M38A1's had a 2 groove pulley system ,just in case you need to get a pulley
Frank

[Jack Innes]

I was able to locate a good pulley & the nut today, I had the key in stock. Fortunately the crankshaft seems to be harder than the pulley so the wear was primarily in the bore & the key. New parts are now installed & all is tight. I did use Locktite on the nut .
Thank you all for the information & help.