You're going to row that big turbo motor? An automatic would be so much better for your app. When you let off the gas to shift, the waste gates blow and the turbo loses pressure and RPM, you get back on the gas and you have to spool again to get boost. Autos never skip a beat, always spooled up and hit hard when shifted and you get to cheat by loading up the turbo against the convertor for launches, you cant spool up in neutral as there is no load on the turbo.