I had those turbo charges for the last summer. They may have 5,000 miles on them- at the most.They have 360 degree thrust bearing and all new components. I have picture from the turbos next to a stock turbocharger so you can see the diference betwen the size of the compressor and the exhaust wheels. They're not blown or something cheaply manufactured in China. I guarantee the quality of the turbos. I paid $1,400 for them just a year ago selling for $800 firm. I'm going with the JWT 700 (a totaly diferent build) so I no longer need them. I have a detailed pics upon request or if you have further questions and wish to speak with me over the phone, please feel free to call me or text me.