[a427sc]

Scott

I would agree with stiffining up the front some. Try tightening up the anti-roll bar first, as it is easier (at least on mine).
And there is the rub. What spring rates Dave B and John H run won't be necessarily right for your Hi-Tech, although the idea is correct. You need to figure out your wheel rates. It's what your tires feel, filtered through all the intricacies of your suspension. Shock angle, distance from tire center etc. Then you can get a true relationship between front and rear. My original Jag ran 2 springs per side @ 525# each,1050 effectively. The front was 400#. But the ratio f/r worked out to 2/3.
The oval guys around here run stiff front, soft rear, claim that the rear will set under acel, and rise under decel, holding the front alignment more accurately. Just the oposite of the road racers I have spoken to.
10" tires, well, I got an FE and it gets a might heavy under braking/turning and just balls up the 8" stuff. 12" in back. But on a cold day, it takes forever to get any heat in them, just can't lean on them hard enough without sliding all over first. And try to find tires in these sizes with a softer compound.

Don