I recommend going with the Aqualu 3/4 tub. I just installed one on my wheels up restoration this past year and very happy with the results. Of course there were minor (sometimes they didn't seem minor) alignment problems with the rest of the hardtop components and doors but I liked the unibody construction and the thickness of the marine aluminum used, as well as the great welds. The one thing I wished Aqualu would have supplied metric ss fasteners instead of SAE. The 78 and older tub would not accept a 74 and older gas tank, and the supplied transmission cover was a challenge to fit as well as the hole cut for the transfer case shifting lever, at least for mine, it was not positioned correctly and the supplied boot was not flexible enough to allow the lever to remain in 2 wheel drive, it keep bumping it out of gear on the first run. I also got it because of the rust issues here in New England, which you probably don't need to worry about. The only other thing was the shipping cost to Maine from British Columbia, but should not be too bad to Las Vegas.