Had forgot to mention that I got engine running prior to deciding to just turbo instead of going all motor, I noticed the 706 heads I had installed had the infamous casting crack or bad casting and passenger head was spotless and had coolant build up so removed heads got a new set ended up doing trunion kit up grade ls7 lifters pac 1219 springs ls9 5 layer head gaskets and sloppy stage 2 cam. Forget what heads I ended up picking up 802 I think got resurfaced and engine went back together.
Present day Update got my hands on a 3D printer and been messing around with it found acouple files on thingaverse like Holley 7” display mount and terminator x bulkhead firewall brackets so printed those out including a 3.5” display mount.