Here you see I like this slipfitter better, although it takes longer to install as you would have to screw TWO extra screws and readjust tilt during installations while the 115 has 2 screws
I believe another good way to find out if it's a AE 113 or AE 115...is the AE 115 has heat sink pattern on the top...although it will be hard to see from the bottom...LOL.....I don't think any AE 113 had em...although I could be wrong......My AE 113 is from 1987 and doesn't have the heat sink pattern on the top...while the current ones does.
I have the pic you commented on LG telling me it was a 115. That was a 4 bolt slipfitter version.