Has anyone any experience of the piston mods needed, if any, to use one of these cams or is it a suck it and see type thing from a dummy build.

If the pistons need modding i'd rather do it before i build the engine. If they are needed is it enough to work out the greater valve lift (about .2 inch i think without my calculator) and just machine this amount off the valve recesses in the pistons.

Engine is a 1760