i have a 01 CL-S and i want the ronjon kit and i want to lower it what size rims do u suggest 18's, 19's. will 20's be to big to fit if i lower it with the kit

 

Go with 19s, if you really want 20s on there, go with a staggered setup like 19s in the front and 20s in the back.

 

That's the setup RJ has (or at least had in the last pics I saw)

Well, unless you have crappy roads like I do, then you may just want to go with 18's and call it a day. Potholes kill rims, especially bigger rims and Pittsburgh roads are full of them year round.

 

the kit makes no difference on whether the wheels will fit or not, that has to do with the offset, width, tire size and drop. if anything the 20" will slightly raise the car off the ground and give you a little more ground clearance, unless you have adjustable coilover suspension.