Hi Ken, I see you have one of my Texan pipes... That will work great with that motor. You will need to shorten the pipe a bunch from how you have it in the picture. Measured from the side of the head (like where the water fitting would be if the water fittings were going side to side) to the high point of the pipe should be about 2". Cut the header off so only about 1/4" sticks up inside the pipe. This should work awesome with any of the normal 12 props being used now days.
Feel free to give me a call if you have any troubles getting it going.
Have fun!
GQ