help w/ Yukon axles & thrust spacers

I measured a stock axle today and from the surface where the brake drum contacts to the end of the splines is 27-11/16" plus or minus 1/16". It wasn't easy getting an exact measurement.

Brambles you might be right about the fittment problem only being with the clutch type unit. I know you can remove the thrust spacers on a clutch unit fairly easy but I'm not sure about the thrust block on a cone type. I know there quite a bit different and if I remember right you'd have to totally disassemble the unit to take it out. Maybe it's a little narrower than the thrust spacers were and it wouldn't be a problem???