i've got some mileage on this stuff now. ride quality is vastly improved as i figured. i put the bilsteins and mm springs in the day before the torque arm was actually on. the car was SUPER rough in the back. you could feel an ant under the rear tires, real harsh.
that's all gone and good now. the handling is pretty good. i have found a couple weaknesses though. my tires arent the best when i really try to push it (sumitomo hrz 18"). which is not a big deal, cause im really pushing hard. the front end still dives too hard with my coilover springs, 14 130's.
that's bein taken care of. i robbed a bank and ordered MM front coilover kit and got matching HD bilsteins. the traction you asked about..
well lets put it this way, my tires arent up to a dead stopped launch quite. they do however, fully hold the power from a 2k roll in first to WOT transition. also a 3500ish rpm to WOT transition. no tire spin except on the shifts i get a tiny chirp in 2nd/3rd.
the car now sucks to drive in the rain to the unsuspecting. it transfers weight so good with the torque arm, the tires break and it kicks out FAST. it rained here the other day and i took the corner at a grandma's pace behind another car. before i knew it, the bastard was sideways. of course its pretty manageable and very easy to play when you want to kick it out.
bottom line; the handling is vastly improved with the
panhard/tq arm. the straight line traction is awesome. the installs weren't too bad IMO. i've got about 7-8 hours between the two installs of solid work. the cost was alot, i also did some stuff others wont need to/wont want to..
i ended up replacing front coilover setup completely, all new struts and shocks, needed subframe braces, purchased the HD torque arm over standard, then rear springs.