Complete top end gasket and seal kits now available for 860cc & 900cc squarecase motors - what you need if you are just going to rebuild your top end. You get everything from the base gaskets & lower bevel tower gaskets up with intake insulators & exhaust rings as well.
Make sure you specify the intake manifold stud spacing from the drop down menu to the right
PHF typically = 52mm, PHM typically = 58mm measured center to center.