Where is your TWS top cover and Chaos sight?
get the ace folder regardless as it's the easiest thing in the world to install. Like matt says, anything else requires some serious work. If you do like the fixed stock look, you can mount the ace folder to a fixed stock with a little work. A folding wood stock, though unorthodox, is easier than replacing and riveting in a new rear trunion. That's an older picture of mine above. I'm an ace fan. It locks up solid. I've hear people sometimes have issues with the push button folder, but the ace O.G. works really well. i'll see if i can find a picture of that folding wood stock thing...