sweet! My 69 Coronet is going to be my 2nd turbo kit when I get around to it (my 70 Sport Fury was my first). It'll be interesting to see how that T4 works, I would suggest running a pyrometer and in that same bung you can temporarily run a copper line to an oil psi gauge and you can do back pressure testing. I did that on my Fury to help me decide on what to do when I moved from JY turbos to Precision units. I found a great deal on a 76mm T6 1.32 A/R dump truck turbo as a starting point for my Coronet when I get to it. I have twins on my Fury because I thought it would be easier - not sure it was.