so, I have a 66 bonneville, and I'm experiencing the same problem. Wikipedia says the fourth generation B-body is from 65-70. Looking for 67 Bonneville rear springs has turned up more results, but I haven't pulled the trigger yet to be sure they fit. Can anyone give me a reason why they wouldn't fit?? they wouldn't change year to year, within the same "generation", right?? I think everyone out there has bought the same database for their websites... and the engine DID change, as did disc brakes becoming an option. So I think the 65 and 66 just got left out somehow. Thoughts anyone??
