The reason the tc shifter needed modding to get in was they were ep91 specific the nylon bushes differ between 90's and 80's I guess the trd and other unit were either ep82 or they are not model specific! As for the Panhard rod I think it depends on a few things to whether it is noticeable ie tyre and wheel sizes and offset! If its lowered the rear end will be out but depending on how much Clearence you have and how accurately central is was in the first place! When I used to go down to JAE in the sr with it fully loaded it would only ever catch on one side with the rays on but with the speedlines it wouldn't catch on either due to the difference in offset! Try putting a piece of wood across the arch an measuring to a spoke or the wheel centre! Do the same on both sides see how much they differ! When I did this after fitting the meisters on the sr it was 6mm out! Also shorty pm me your address I have something for you!