rear sway bar size

Update,i just recently had some poly bushings installed and so far the squeek has disappeared that bugged me last year from the o.e ones and i bought the 21mm ones and the install went w/o problems,fitment etc and yes the bar is the factory one:D

okay

So. are you saying the car has the LE1 option?????? Or someone before you replaced the 19mm bar with a 21mm???

So. are you saying the car has the LE1 option?????? Or someone before you replaced the 19mm bar with a 21mm???

Thats what I was thinking. I know my z28 didn't come with a 21mm bar stock, I had to make a phone call to Spohn for that to happen.:D

My r.p.o sticker in the glove box doesn,t list 1le on the codes and the original owner didn,t change the bar so it is the original one but when i gave my vin # to a GM parts dealer in AZ and the suspension code he told me i need the 21mm bushings.