Wow that's surely a nice upgrade, but allow me to ask have you considered other options?
Reason I ask is you intend to keep power under 500bhp on stock internals first, but according to Garrett the GTX3067R anyway maxes out at 500bhp, so to go beyond you'll need a GTX3071R...
On another hand if you want to stay below the 500bhp mark you can achieve similar power levels with the LOBA LO4XX while retaining a lot more drivability and spool threshold in the lower rpms than the GT.
...and that's where he tells me he got a deal on the GT for 500$ :bonk: