800-900 WHP is achievable on the stock block. Torque wise no. 600/650 is the limit. The GTR stock block/trans record car did 9.0 on XONA FP Greens. That cars set up is almost identical to this one minus weight reduction. Lots of potential here. TSM also has a few stock block cars with Elite turbos in the 800-900whp range.
GLWS OP! Great looking car. Those turbos kick ass. Price is on point.