I got around to putting my crane cams guide plate conversion kit on my set of d3 heads. When installing the guide plates I noticed that you had to take them off if you ever wanted to take the head off. So I found a way to install them and not have to take them back off when removing the head.
All you need is an air grinder and a bit to grind cast iron with and take a little bit of material off the side of the raised section of the rocker mount. I do not see in any way that this was a problem mounting the guide plates this way. One thing I want to point out is that the conversion kit is about $130 and getting a set of D3 heads converted to screw in studs in $150 here. So on a mild engine where you don't want to pull the head they will work fine, but if you have the heads off and are getting them rebuilt then get them converted to screw in studs or buy the ford racing rockers made just for this from Lem.
notice the little bit ground off
All you need is an air grinder and a bit to grind cast iron with and take a little bit of material off the side of the raised section of the rocker mount. I do not see in any way that this was a problem mounting the guide plates this way. One thing I want to point out is that the conversion kit is about $130 and getting a set of D3 heads converted to screw in studs in $150 here. So on a mild engine where you don't want to pull the head they will work fine, but if you have the heads off and are getting them rebuilt then get them converted to screw in studs or buy the ford racing rockers made just for this from Lem.
notice the little bit ground off