Re Justa's comment about "Long Fingers":

Not a prerequisite in my opinion (as usual, I'm willing to be beaten to death by convincing arguements). I have very average fingers but have found the key is in WRIST MOBILITY. I've developed such a limp wrist that I'm starting to buy Judy Garland records and grow a small moustache!

But The REAL KEY to playing Merle's chords EASILY...is that he had ALL HIS GUITAR NECKS SHAVED TO THE THICKNESS OF A GIBSON SUPER 400!!!! Ever played one of those? Tiny tiny neck. You can do it on a Martin (I do) but if you ever really get into his style, you may want an additional axe. This id how GAS starts!

Rick