Hmmmmmmm......
I don't know what Alaska Roys preaching about, but all that's "needed" to shoot 45Super in a full size 45ACP handgun is a heavier recoil spring. It seems the "ace-custom-45" website has a few believers when it pushes the "mandatory" super heavy-duty parts. You don't need to buy heavy duty extractors, or super-duper firing pins and stops.
The recoil spring recommended for full size 1911's is 32#!!!!
Let's see, standard is 16# on a govn't model, and the conversion calls for doubling it to 32 pounds ?
This spells trouble for any frame other than carbon steel. Aluminum will show the battering rather quickly, and stainless steel, with it being softer than carbon due to the inability to properly heat treat it, won't be far behind.
The heaviest recoil spring I would put into a 1911 is 24#, ala 10mm.
But,..I sure would like to have a cheap, beater gun to convert to this high powered cartridge. Although, I'd use a comp to tame recoil in order to use a lower power recoil spring.
What would be nice is a "street-comped" 1911 in 45Super.