He hasn't sent me any, I'll pop over his place next week and get some. He'll be at some of the summer meets jae etc so you can see/hear it in the flesh
I've fitted a few of those to Mk1's in the past, mind you they usually have a 3sgte on the other end You might find that system too free flowing for the 4agze, a certain amount of back pressure is needed for best performance.