Thanks sweetK30,
3 alternatives to that ratio come to mind:
a.) Overdrive unit (selective, for rear only) would effectively take it to 5.05 gear
($,$$$)
b.) Swap in the nice K30 axle sets I have in an '89 roller (14FF/D60)
(a lot of work if they would even fit right, plus BIG wheels/tires/adapters
even bigger $,$$$)
c.) BB motor and forget the interstate capability.
(about 3400 rpm @55 mph)