Check the listing for details. Lower GM Metric Trailing Arm Mounts - 2.5" drop (2 1/2") single hole pair. Condition: New. Listed at 39.00 USD. Lower GM Metric Trailing Arm Mounts - 2.5" drop (2 1/2") single hole, pair PEM Part Number HMBLSet IMCA HSWelds on 3" OD rear end tubesfor stock General Motors Metric (mid-size) rear suspension trailing armsSingle hole is at 2.5" (2 1/2") from bottom of rear end tube to center of hole to fit the rules for IMCA Hobby StockRaw Mild Steel, Not painted Disclaimer. Warning! Auto racing is a hazardous sport. No warranty or guarantee is made or implied regarding any racing product sold by Performance Engineering and Manufacturing, LLC. User assumes all risks. We will ship using UPS Ground or Priority Mail with Insurance and will send a Tracking/Delivery Confirmation Number after shipped. WARNING: Cancer And Reproductive Harm- www.P65Warnings.ca.gov