If you are looking at a 7064 I strongly suggest you also consider the 7163.

I am about to go on the waiting list for a 7163.

Smaller B1 frame turbo so should be easier to install and internal gate Twin Scroll T4 0.80 hot side.. Main benefit is it is the first of the BW turbos (if not the first one of the first) to have mixed flow turbines. So instead of just being radial flow of exhaust gases they turn the exhaust flow in the housing and have a degree of axial turbone flow as well.

Talk is they flow very well and are very responsive for the size wheels they run.

I just need to get the software to tune my Pectel T2 and will be waiting for it to arrive to start plumpint it all up