Hi Steve,
You have most of the info right now, but you can get more info at the web spot that is in my signature, but I will tell you what you asked for.
I run stock Ford 2.9 V6 valves, with stock retainers and keepers. I recommend using all felpro gaskets and valve seals. You can set up the springs like stock, since the higher lift of my cam is not enough to cause a problem. I recommend buying a set of good stock pistons, and they don't need to have valve clearance eyebrows cut into them, because this is not an interferance engine; the valces are not on an angle to the pistons, so clearance for the edge of a valve isn't necessary.
Either set of heads will work well for you. The only exception would be the 1974 heads, because they don't have heat risers in them. You will find a referance to a good head porter on the web spot. There is a ton of info there. If you have your heads milled, you will need to have your manifold milled to match. If you don't do this, you will end up with vacuum leaks, or worse, possible internal water leaks.
You'd need to do some math if you were going to use taller pistons, because I don't recommend going past 9.5 to 1 compression. I do recommend milling the heads a maximum of .030", which will give about 8.5 to 1. If you really want a Bad engine, then you can go with a set of taller pistons, but don't go crazy.
If you have any other questions, just drop me an email and I will answer them all.
You have most of the info right now, but you can get more info at the web spot that is in my signature, but I will tell you what you asked for.
I run stock Ford 2.9 V6 valves, with stock retainers and keepers. I recommend using all felpro gaskets and valve seals. You can set up the springs like stock, since the higher lift of my cam is not enough to cause a problem. I recommend buying a set of good stock pistons, and they don't need to have valve clearance eyebrows cut into them, because this is not an interferance engine; the valces are not on an angle to the pistons, so clearance for the edge of a valve isn't necessary.
Either set of heads will work well for you. The only exception would be the 1974 heads, because they don't have heat risers in them. You will find a referance to a good head porter on the web spot. There is a ton of info there. If you have your heads milled, you will need to have your manifold milled to match. If you don't do this, you will end up with vacuum leaks, or worse, possible internal water leaks.
You'd need to do some math if you were going to use taller pistons, because I don't recommend going past 9.5 to 1 compression. I do recommend milling the heads a maximum of .030", which will give about 8.5 to 1. If you really want a Bad engine, then you can go with a set of taller pistons, but don't go crazy.
If you have any other questions, just drop me an email and I will answer them all.
