Thats probably the best deal on a large Ive seen. And it looks like its new. I need more packs like I need more wives, but I might grab a few of those.
If you are going to mod your frame there are a few threads on here about frame swaps. Mine is on the top of this page, on page 2 covers ALICE mods. Theres another thread, somebody posted a welded frame that looked great, and I wish I had saved it or posted on it so I could find it again, but I had ordered the packs Im running now and couldnt see another ALICE build. Definately keep the MOLLE straps, they are equal to the custom straps and much cheaper.
By the time you reenforce this frame, you could just do a direct swap with a freighter type frame and call it good. And save the hassle of reenforcing aluminum tubing, which really is a contradiction. You MIGHT, if it works for you, get the MOLLE frame and strap set, then attach the Large ALICE, and run with that. I think you would do very well with that setup. I really like the large Alice, its a good pack if packed properly, and Ive never seen the main body of one break out at the seams like I have some other packs. I have seen the pockets tear off, but razor wire will do that to most anything.
The frame I broke, or broke me depending on what angle you were watching from snapped at the rivet, the upright tube broke in half at the rivet hole, the top half stabbing me while the bottom half was working on cutting me in a side to side motion. To be fair, I had a full large ruck, a M47 Dragon and the day sight, and a PRC77 in the radio pocket. All total that frame had over 100 lbs on it. Wasnt a normal load, just trying to get all the crap off the LZ in a hurry. Didnt work out like I planned it, but so few ops do. The biggest advantage of the ALICE is you can attach things like AT Missiles, cache tubes and other odd shaped things which fit under the straps incredably fast. Just jam it under, pull the strap tight and go.
My favorite Kifaru packs cant do that. At least not nearly as well.