nobody makes a +P+ for .45acp. they do make it for .38special, 9mm and .38super. there IS however, a company down in TX that's making a .45super. the .45super uses the same size case as .45acp, and could be accidentally loaded into a regular .45 acp gun. but it's unlikely due to the fact that .45 super is not popular.
you can load your own .45acp to +P+ levels, but you're going to be spending alot totally rebuilding your gun so it will take the pressures.
"nobody makes a +P+ for .45acp."
MagSafe Ammo $ 19.95 Purchase
.45ACP +P+, 92 grain-6 rounds per package (Law Enforcement Only)
http://www.bernies-sports.com/accessories/accessory.cfm?TypeID=2