[randywebb]

This is an interesting thread fro me as I have about the same combo and the PO put in hugely stiff T-bars that need to be softened. Mine is a '73 with a carbed 3.2L in it. I am going to lighten the rear some more (prob. take out 100 lbs. total from that end) and it is a street car.

I looked at the wts. rel. to the stock wts. - the 3.2L is about the same wt. as the stock engine once you lose all the FI and exhaust stuff on it. So that suggests the stock setup - or something close to it - as the soft end point for the range you want to try. If your 3.2L is heavier, then alter that.
I also discussed this with Bruce Anderson who also came up with 21/27.

You can try different Tbars if the cost and hassle (labor) permit. That's the real answer.

Be careful with the $$ no object questions! Some have put erp suspensions in the front of these cars, and 993 rear susps. in also. A step down is usually considered to be coilovers, but I don't see the benefit for a street car.