Don,
Has Dan considered cross-steering it with a rack & pinion or is he trying to stay more "old school"?

If that's a 9" Ford rear, he might want a couple of different gear ratios. They're easy to change; back in my stock car days, I could switch pumpkins in about 20 minutes. Anyway, as light as that thing is, the 3.89 is probably good for neck-snapping launches and local driving. Then a 2.75 would be nice to have in case he ever wants to drive somewhere long distance. I'm sure he wants a posi unit for the "everyday" gear, but he could keep a "junkyard" single track 2.75 layin' around for a road gear (if he can find one with 31 splines).

I'd like to go to the Billetproof event; time will tell. That's coming up pretty soon isn't it? My son can't take his car because the rear wheels are "too new"!