OK, and I do to. It's just that the M6866 is rated at 25 GPH. You might get more our of any of them but none would be guraranteed to support 400 HP. I just can't in good conscience recommend one for the OP.
Yeah, it wasn't a recommendation. Just responding to the Carter Post. But in truth the big block six pack cars are a lot of cubes and a lot of horsepower that ran well on these types of pumps.
