Bill,

Don't have the specs right now, but we researched the idea of the Escort hubs years ago and decided it wouldn't work without serious transformation ($) - I believe the biggest problem was with the axle splines and of course legalities.

But Jeff and Jim Leone are still making "replacement" hubs for the Fiesta. Ain't cheap but easier and less expensive than going to another model.

I corresponded with them last week as a matter of fact - (busted a hub on mine last race of the season due to a sticking caliper over-heating the assembly). I can get you Leone's contact info if you like?

I have used stock hubs if you want them, but of course you are asking for another wheel-leaving-the-car experience when you use them.