1997 Ford E-350 Econoline Club Wagon Engine: 5.4L V8 CNG;EngineVIN: M; w/o A.C.;. 1997 Ford E-350 Econoline Club Wagon Engine: 5.4L V8 GAS;EngineVIN: L; Grooved; w/o A.C.;. 1998 Ford E-350 Econoline Club Wagon Engine: 5.4L V8 BI-FUEL;EngineVIN: Z; w/o A.C.;.