I finally got a chance to take a test drive and its a night and day improvement. My car feels absolutely planted now. The WMW 25.5mm hollow rear swaybar complements the 27mm H&R front swaybar perfectly

 

Finally got my project completed and have been driving the car about a week. Sure glad I upgraded the front sway bar, dead flat in the corners now, Wavetrak LSD works great, alignment next week, then track day at vimp, Augest 8. Should be a ton of fun.

 

Congrats! It should be so much more fun with adequately stiffer sway bars on both axles! There's a reason why manufacturers alter them both on their high-performance versions (GT3, RS, M4 CS etc.).

I have to disagree, dude. Neither is true, at least not in general. Not with the Wavetrak diff which will care for traction even better than say a Quaife one. Too many people repeat internet half-whisdom from hearsay. The truth is, uprated front sway bars are rarely used due to cost and labour mainly. Let me ask, you have no own experience with bigger front sway bars? I repeatedly experienced that 99,9 % of forum members who advice against bigger front sway bars never ever drove a car with them.
If a FWD car suffers from excessive understeer that's most likely due to lack of an LSD and sufficient front camber. Care for that by abolishing these causes. A stiff rear sway bar isn't the cure or at best it's one with serious by-effects. High-speed stability will suffer, the car won't even get any faster.