Ok I decided to part with the money for this holster, now for the question. My primary sidearm is a full size IMI Baby Desert Eagle. This is not one of the listed firearms that you can get this holster for. I also have a Beretta,which is on the list. But since the Baby Eagle is more reliable, more comfortable, and has a better trigger and I'm more accurate with it, well you can see why I would rather get the holster for the Baby Eagle. I've never see the holster so i assume it's molded or something to "fit" a specific firearm. So is it possible to have one "custom" made to fit my handgun?

So far as I know, Safariland will not "custom make" holsters.  You're pretty much SOL.  About the only thing you can do is look at the guns that are pretty close to your's in size, buy the holster and then do some customizing yourself.

You can unbolt the holster from the shroud, remove all the hardware and then...if you're gutsy...remold it.  The holster is kydex with a liner.  If you heat it up, it will become pliable again and you might, just maybe, be able to remold it to fit your gun and make it work.  Absolutely no guarantees and you'll be out $65-100 if it doesn't work.

Oops, not quite that much.  The shroud is universal and you can get other accessories and use it on your offside leg for mag pouches, etc.  Wouldn't be a total loss if it doesn't work.