I've had my 51 for a few years now. I've ran a best of 11.6 and have had the boost up to 25-26 pounds at times. I am contemplating upgrading to a GT style turbo so I would need to sell the 51. My question is, was there any resolution to the problem some were having with the wheel flying off or disintegrating?? I really want to sell the turbo in good faith so that is why I am asking. Also, while you're in here, what is a good price for a used 51 with around 5,000 miles on it?