In my Loop Library three "Torn Jeans" loops are installed in the collection "iLife Sound Effects". I think, they came with the iLife '11 installer. Do you still have a backup of your old hard drive? Then look at the folder
/Library/Audio/Apple Loops/Apple/iLife Sound Effects/Jingles/
and restore these loops.
Have you already installed the $4.99 in-app purchase:
This will restore most of the sounds and loops that came with GarageBand '11, only I do not know, if your loops will be part of that bundle, because I had them installed already.
The loops should be on the bundled iLife installer CDs, but that would be rather expensive for 3 loops.