looks like its going to be a fun build.
I see your looking at the dse tank but you might want to look in to a vaporworx / ricks tank if your going to pulling some G's with that.
as far as the brp swap kit. they make them around the lh8 gm pan and it puts the motor high. plus if you use the holly parts there is some one on here to help you out with any questions. don't forget they also make a ecu and harness that would work with your motor.