here is a way is modify Colt Super 38 Magazines to fit..
But I would feel bad chopping up a good super 38 magazine at 40 to 60 bucks each, Just to get an extra 4 shots....
Colt .38 Super Magazine Conversion
Yep, that's about how I pictured it would work. I think I could get exra Llama mags cheaper than that though! I don't think I'll be doing it anyway, but I would like to get a couple more mags for the pistol.