I think everything will still fit. Ehrenburg stuffed a 5.7 in a car using the Holley mounts and the Holley FEAD kit which added length to the motor. He was at the limit but got it to fit. With the OEM setup, pretty sure it will be fine.
In a perfect world, I would rather move the motor back and help the weight bias, but everything is a compromise. I’m not building a 10/10th’s race car so this seems like a reasonable compromise to me.
