still can't find that part number anywhere, but they are certainly early as you said, john (not questioning you of course, just verifying to ease my questions on axle fitment). i just fitted up a wheel and fender to see what i get and i'm not sure i even got the suggested 1.75" per side. here is a pick with the stock suspension on with 2" spacers...
here are some picks of the 951 arms with a 1.75" spacer on...
don't know that i have the time, but i may need to consider late arms. based on what i saw genius say in another thread, it doesn't change the axle issue. he is using a 944S 21.25" axle. the axle length must be the same between early and late arms. anyone want to trade early for late arms?
if the early arms add 43mm and this is what i look like with that plus 1.75" (which i would want to shave about .25" to .33" off of that for the perfect fit), then the extra 32mm of the late arms gets me pretty darn close.