Bulletin 01-06-01-007A refers to 3.8 engine vin K for the following models
1995 - 1997 Riviera
1995 - 1998 LeSabre, Park Ave, Bonneville, Eighty Eight
1996 - 1998 Regal
1998 Lumina, Monte Carlo, Intrigue
1997 - 1998 Grand Prix
1995 - 1996 Ninety Eight
The bulletin instructs you to replace BOTH the upper and lower manifolds. The kit from KenCo will save you replacing the lower. It's expensive for 2 little parts but saves you a lot of work. The dealer I got it from did not recommend the Dorman replacement manifold. They said it didn't last like the GM ones. (Once you eliminate the cause of the failure). I saw a Bonneville with only 60,000 that melted right thru to the coolant passage. Engine was locked solid. Had to take out the spark plugs to see if it would turn. The overflow jar was full but the radiator empty
