Sway Bar package for 00' regal Ls and front end vibrations.

http://www.gmpartsdirect.com/results.cfm?singlepart=1&partnumber=pk12456148
I'd like to order this package being that the current sway bar has broken by the end links.
My question is if this package can be installed for my 00' Regal LS. Or is it solely for Grand Prix, Impalas and Monte Carlos. Also I'm feeling vibrations when driving on highways. The vibrations are felt when I reach speeds of 40-45mph. Once past those speeds the vibrations disappear. The front tires are brand new and balance has been checked. I'm thinking I need add'l front end work. What are the other possible front end parts that would cause this vibration. BTW the mileage on my vehicle has reached 139k.

The GMPP kit should work on all 97-03 Regal GS/LS. ZZP offers a similar GMPP kit but you can get just the front stabilizer bar and it comes with the proper sized mid-point bushings. So checkout the link below.

Click here (http://www.zzperformance.com/grand_prix/products1.php?id=571&catid=138)

The kit shown in your link has the strut front crossbar (Strut Tower Brace) but you should already have one installed stock unlike the other GM sister cars. Even a Grand Prix doesn't come stock with the strut cross bar.

Since the stabilizer bar is cracked I'd get that replaced first before doing any further troubleshooting or parts replacement on the front or rear end.

. The front tires are brand new and balance has been checked..

Many techincians fail to check for rim or tire runout.

A tire can be square and still balance zero. So if the tire has too much runout or wobble it will still shake the car.

you could buy the Dorman 1
it's a solid bar and is 33mm in diameter and comes with everything needed to replace it.

https://www.dormanproducts.com/cgi-bin/vm91corp30r/item-dtl.w?sid=iykcetRaXKcbapUd012950192591133890&item=927-100&icrid=0x002ab184&clt=hwrap1&vsrch_str=&vsrch_brand=&vsrch_cat=&st_amount=&end_amount=&start=&vfrom=&prev=&vnext=&category_list=:0