It's way! Fwd. Was built around an ops 1.2 drum eng.same case as there 80I wouldn’t worry much about a super slight CG change, you may would want to move your turnfin a little though. It’s location versus CG is more critical than the CG versus sponson ride pad location. With some mods, your big block .91 will be consistently faster than 67/80’s. How did the OPS 1.2 hold up for you ?