Yes, the manifold setup with the HS4 went beautifully. Started 1st time every time and had plenty of torque at the bottom end. We are going to try it out ourselves, next weekend, but it looks like we could be ordering more of these 
http://www.commervanspares.co.uk/
http://www.yorkshireclassiccampers.co.uk/
http://www.commervanspares.co.uk/
http://www.yorkshireclassiccampers.co.uk/