Hey mate, i've had a good read of what you're up to on your site. When i bought my VS in july 06, she had a factory V5W (Country pack) suspension setup. This pack included REALLY high front and rear springs, i'm not sure if the shocks were V5W specific, a fairly heavy duty front stabiliser (23mm from memory?), a really light duty rear stabiliser (16mm or so) plus some other stuff .The front stabiliser must be heavier than stock, and the rear, lighter than stock, i'd reckon.
Anyway, i put up with her like this until october when I got her lowered by wholesale suspension. I got King spring super lows on the front (all new struts too), ultra lows on the rear, KYB short shocks, adjustable panhard rod. I've not replaced either front or rear stabilisers. I dont think i'll replace the front as there is very little body roll, and sticks to the road like (you know what) to a blanket. This is on 225-50-r16's BTW.
The rear stabiliser i feel is a little too soft: on hard cornering the rear inside wheel feels like it wants to lift up, like it's oversteering unless i back off. It handles so well as it is, but i think it'd handle better with a stiffer rear stabiliser.
All this said, i'm unaware of how my king springs/KYB shocks compare to the pedders springs/shocks you're running: maybe you need something heavier-duty? From memory, there were 2 shocks options when i was quoted by pedders: "comfort gas" and "sports", and numerous springs options. The sports shocks would give a less "wallowy" ride. If after upgrading front and rear stabilisers to heavier ones and you STILL need a stiffer front end, try a strut brace.
IMHO, upgrading to bigger rims MAY also help, as the sidewalls of 205-65-r15 tyres are rather soft, which wont do the body roll any favours.
Hope this helps, sorry it's so long :bang:
PS Not suspension related i know, but your extractors are running to the stock y-piece, correct? It may be worth getting a mandrel bent y-piece made up to replace it, as the stock one is press bent. Press bends arent as flow-friendly. Just something i saw that you may want to think about :thumbsup: cheers