Indiana body shops and auto insurers are on a collision course over repair compensation practices, a dispute that could cost millions of dollars to patch up. In a federal lawsuit, 14 Indiana shops accuse State Farm Insurance and competitors of extracting "unreasonable and onerous" concessions on vehicle repair costs. When a shop doesn’t comply with price ceilings, the insurers dissuade policyholders from choosing that shop for repairs by telling them it has quality issues or gets lots of complaints, the shops allege in the suit filed April 2.