wow 173k on the oem bilsteins they are shot for sure! I just replaced mine at 143k and they were dead in the rear but not too bad up front. I went ahead and got a set of 4 Monroe Reflex Monotubes from checker. They did a price match and beat it by 5%. They were $42.75ea. They are a overall good shock. ride is nice but then again the OEM's were shot. They are by far the best priced shock you will find that is a monotube. Get ONLY a monotube style shock. You may also look into the Gabreil Max Control Monotube they are around $50 and so is the KYB MonoMax. Hope this helps some. Let me know if you have any more questions. The part number for the Monroes are Front 911511 and Rears 911512.