I actually have the how to power tune pinto book in pdf (IIRC I have two different ones) and they do show quite well what to do.
I only have injection heads actually (one what is actually ported already, but this is most probably going on top of another N/A pinto engine at a later date) and the one that is currently on this turbo car (intake side ported only
), tho I think it will stay in the car as long as I have another head prepared and ready to be swapped.
There is just quite a few things that I don't expect to be able to do at home myself. Like proper valve seats fitting to be used with unleaded and double valve springs (I'm also gonna go for a bigger cam the current Burton 134 doesn't quite do it for me). The porting itself is quite a DIY job, but I think it should be done by the same guy who does the big valve conversion.
Maybe at some point in the future I'll start to practice to do it myself but currently it doesn't seem like a very wise option, after all the amount of money saved isn't very big either when you look at the big picture.