What I dont like about Mugen?????? ha, is this a trick question? Rear one is good, if your car is tweaked at all the bar wont fit. I bought the rear one about 5 weeks ago and I did notice a difference in handling.
If your thinking about doin suspension stuff then do a Mugen 26mm rear sway bar! or both front and rear. that will make more of a difference than you will beleive. trust me

scott