Okay cool. As far as attys if you can find a bottom fed Cyclone with the AFC cap (~$95 as a combo) that would be my first recommendation. By far the best atty combo for the Reo Grand. Main issue is you will probably have a hard time finding both paired together. Second bet would be the Igo-W Rob sells or the RM4 (Atomic clone). Both have drawbacks in my opinion:
The W has triple posts for duels but fixed air flow (which may or may not matter to you). You can buy after markets caps with AFC but they run $20-40 bucks depending on finish. So you end up around $90 bucks again.
The RM4/Atomic clone has triple posts and AFC however there have been some reports of people shorting the atty out because the post screws loosen up and the negative/positive end up touching each other. Shorting the atty is more of a pain than any danger since the hot spring in the Reo will collapse but that is one of the issues that has come up.
Edit: The Reo hot spring is replaceable but it's not something you can get at any hardware store, only Rob sells them as far as I know.
You can't get the springs at any hardware store. But there is a temporary or other solution that's available at any Walmart.
Just buy a Auto Fuse, bend one leg down and one leg up.
Many suggest the 15 amp one.
Me I carried it a step further and I took a pure copper wire and circled the center, lowered my resistance by .05V of course I have no protection against shorts. But I like to live on the edge.
Another suggestion in a pinch. Go to any Home Depot buy pure copper wire. Then twist it with pliers into a spring. For some reason the fuse with wire down the center gave me lower resistance.