Im a big fan of softer springs and thicker bars on a road car. The Wife’s 240 wagon went from stock bars to 240 turbo bars (bought from the states for ‘nix’) and it made a vert sweet difference. It still pitches on the picks but I dont mind that so much. If your brave (which is silly on the road mind) it can trail brake/slide into a corner nicely. I actually find the 240 to be very balanced (ie similar grip levels when loaded in a corner front to back) and can easily be adjusted on the throttle to tighten a line or vice versa.
Our 205 Gti race car is setup like this and its brilliant.
As soon as you start playing with shocks and springs you really need to have them dynoed to make sure they are matched. Too often people buy marketed brands that just make the car feel stiffer or ‘heaps better in the turns bro’ when really theyre not.
It costs big bucks to get suspension setup correctly and factories, believe what you want, generally spend loads getting it right from the beginning taking into account car weight, wheel rates, stock geometry etc etc.Small changes can make very adverse effects when shits gets real if your over cook it.
Do one thing at a time and see how you like it otherwise you will never know what actually works. This is how race cars are setup properly. Not just ‘buy this and that and itll be awesome’.
I would try finding sway bars that increase the % the SAME front to back as the factory has fitted and go from there.
Increasing the spring rates will help along the way at some point but you will need to control them with a new shocks eventually also fwiw (as im sure u know already). The name DVS come up often on here and I believe they do race cars and know whats what. Maybe call them for a chat.
If your on a tight budget try the sway bars first and see how you like it, you wont need to brake as much 😉
There are plenty of spring makers around, the last time I had some made there were $120 for a set of 2. Be warned about having swap bars made, if there not heat treated dont buy them as they will eventually stop working or just bend. (Unless there really fing thick which is usless on the road anyway)
lots of well setup cars actually roll more than you think ( look at the new renault a110) and dont think about lowering it more than 20-30mm as it will stuff the roll center and make it worse. Common misconception.
Ramble over. Fire suit on...