Thanks for the info. Yes, radials all round. The 1.03 seemed to be a good compromise between "mushy" front end and too-stiff for the street.

Darts with big-blocks in the nose are not generally known for superb handling or oversteer It was even worse when I had an A-body with an iron 440 and a 6-71 blower
I'm primarily interested in going fast in a straight line anyway (295/50-15's out back).

I know that increased caster provides high speed stability with increased steering effort. But just how much of an increase?
If going from, say, +4 to +6 caster, does the effort rise by 5%? 10%? 25%?

I've also read that too much caster can be a bad thing since the camber in turns becomes severe and limits the contact patch (tire rides on one edge).
Presumably the tubular arms are made with +4 for a reason...