If you don't buy the one DougH has then buy a rebuilt from NAPA.
They seem to work OK and are better quality than the discount car parts. They are all recommended to be replaced every 5 years. No one told you that did they?
Bob Shaw

87 Raizer, 4.3V6, Mod TH700R4,231CHD, detroit rear and LSD front, bouncy seats, 2" lift and 32x15 BFG MT tires.