Rob- What date Spare Parts List are you working with? Over the years I have seen various Spare Parts List for the HUP with different dates. The one that came with my HUP is dated June 1945 and shows a number of running part number changes. Back when I was first collecting information about HUPs I was corresponding with Bart Vanderveen and he had not see a parts list dated that late, I sent him a copy of mine. Comparing when parts changes showed in the parts book was one of Bart’s ways of dating particular vehicles as in many cases the a parts change will show a notation “before Serial No 484—16967” I’ve posted the Front Spring and Shock Pages to my web page
http://www.canadianmilitarypattern.c...ailphotos.html