They are custom builds from a friend of mine. All aluminum. Front basket and roof coated with spray in bed liner (Rhino lining, I think). The roof as you can see in the pics rear half folds forward in case I need to haul something that is tall in the bed. Also makes standing and filling feeders easier. Also the small light bars that are mounted to the under side of the rear portion of the top when folded forward expand the view at night as they point slightly outward when folded forward... This sucker lights up the world with those lights...
For the Multi-Seal, I will try to find out about the minimum temperature... I have a friend that was involved in the original testing of this product for the military WAY back when (around 1980 or so) when they were developing it. He did corrosion testing for them co they could promote that it would not corrode rims and is nonflammable like so many dire sealants were back then. If I can get an answer, I will post back. I do know that it is glycol based at least, so it likely would be quite low temp. compatible...just not sure how low.
More later.
Thanks for all the kind words on the buggy.... It actually has a few other upgrades that weren't shown in those pics... That is from when it was brand new... When I get the new tires on, I will post updated pics. Never put a lift kit on one before and I'm really liking it so far. With the 1 1/2" wheel spacers, it "seems" more stable... I think my next upgrade will be Fox Shocks front and rear... Heard good things about those... but dang!! they're pricey!!