Hi Richard, thank you for reaching out. We don't have the replacement bushings for the Hellwig part number 75555. If your vehicle information matches this kit, you can use this link to order this part at a discounted price today while supplies last: https://www.carparts.com/sway-bar-kit/hellwig/h637555?can=CPAP3648_CSQA_20241029 I hope this helps. Happy shopping.

Hi Cyle, thank you for reaching out. This item fits the 1999 GMC/Chevrolet K3500 with single rear wheels. However, we suggest you reach out to the manufacturer to verify if this is compatible with air bags and the installation that you prefer for this product. Click this link for the installation guide and contact information: https://www.hellwigproducts.com/wp-content/uploads/product-digital-assets/135007555.pdf You can use this link to go back to the item page and continue ordering the part at 29% off the regular price today: https://www.carparts.com/sway-bar-kit/hellwig/h637555?can=CPAP3648_CSQA_20221121 I hope this helps. Enjoy shopping.

Hi Robert, I'm glad to assist you. We can only guarantee 100% fitment if your truck has the stock height. If your truck is lowered 4 inches, we would rather recommend referring to your local auto repair shops or your dealership to be accurate. If good, after you have consulted already. Click the link below to order today and grab our sale price offer, which also comes with a 30-day post-purchase price match guarantee. I hope this helps. Happy shopping. https://www.carparts.com/sway-bar-kit/hellwig/h637555?can=CPJE1043_20220227

Hi, The dimension/size thickness is - Rear Sway Bar Diameter : 1.125 inches, 29.00 millimiter. This is by the way a guaranteed direct fit for 1988 to 1992 Chevrolet C1500, 4.3L and 5.0L, 1988-1992 Chevrolet C1500, Regular cab, 2-Door, RWD, for use with 2 inch Drop In Rear.