My first Colt in .44 special is set to be delievered this afternoon.

It has the short barrel (4 3/4) and all my other pistols (clones) have the 5.5 inch barrel. I am partiaL to the 5.5 inch barrel. If I decide to change the barrel length on this one, what are the pro's/cons of doing so. Where can I find a Colt barrel?
The pistol is not a collectible (about 10 years old) and is just a carry gun.