Penske/Donohue TA Javelin...4-lug wheels?

["John W Rosa" <JohnRosa@xxxxxxxxxxxxxx>]

I don't know if this subject has been gone over 
on the AMC-list before...or anywhere else for 
that matter.

The Kaplan 68/69 Trans Am Javelin race cars had
the usual 5-lug wheels. Same goes for the 1971
Penske and 1972 Woods cars.

But the 1970, in era photos, has 4 lugs.

Knowing the Penske thought process, this is 
likely a bending of the rules to shorten pit 
times... but has a firm reason ever been nailed
down?

John