I was going to say "don't cut that crossmember, it is an early 28 piece..." next pic it was cut. No biggie. The slotted top of the axle bolt hole in the wishbone wass made that way to hold the axle bolt from turning while you tighten the nut underneath. It needs to be really tight. Looks like a fun project with that early 283 and all. I'm still thinking 59A in my 29 Tudor but who knows? Enjoy.