Off season suspension change suggestions

[flyin5-o]

So while I was happy with the "out of the box" handling in my cars first outing I feel there is room for improvement. I am looking for some critique and suggestions. I am looking to stay somewhat low buck.

Current setup:

Front:
Stock '88 k-member and arms
'88 quick ratio rack
SVO spindles with adapters
Ground Pounder road race coil overs (400#/in)
Ground Pounder camber caster plates
MM spherical rack bushings
MM STB
'87-93 GT sway bar
Motorsports Del a Lum control arm bushings
'90 Gt tie rod ends

Rear:
PM3L
Stock control arms/bushings
Mathis anti squat brackets
Panhard bar
Stock '87-93 v8 springs
Stock '87-93 v8 swaybar

Alignment:
3/4 degrees + caster
1.5 degrees - camber
0 Toe

Tires/wheels:
245/40r15 BFG Rival S-1.5
15x8 4inch backspace rims

On track impressions:
The car seemed fairly balanced with a slight tendency to understeer. Rear end seemed to roll excessively especially compared to the front but it wasn't twitchy. Turn in was good. Like I said wasn't horrible but I feel it could be better.

What I currently plan to do:

Full Mathis mods to the front k-member with 99-04 arms-
4cyl front sway bar
Stiffer rear springs (MM tourque arm springs?) Need some type of height adjuster as lowering springs to short
MM adjustable rear swaybar or no swaybar or a '80's Lincoln/Mercury something bar that mounted to the chassis and rear, bar is 9/16" diameter.

Suggestions/ comments?