All right guys, ran my 2000 Ram QC sb 4x4 last night. Same track as always slighly worse conditions (air) than my previous passes. My best previous pass during the middle of April was a [email protected] For last nights attempts I removed the spare tire (approx 50 lbs or more) and removed the factory clutch fan. I thought the weight savings alone would get me into the 16.50's but it wasn't to be. My best pass was a [email protected] Yes the speed was up very slightly, but the run was slower everywhere except for the last 320 feet. While I already mentioned that the air wasn't quite as good, I would have thought that the weight loss plus the lower drag of the cooling fan would have shown an improvement. Traction, or the lack of, was not a factor. I have read many posts talking about replacing the cooling fan with an electrical alternative. My opinion is that if you can do it effectively for under about 150 bucks go for it. Just don't expect a big improvement from doing it. As for the losing the additional weight of the spare tire, draw your own conclusions. Any thoughts guys???