we have a sport bar, not a roll bar.
if you look at real roll cages you'll find what is offered to us is pretty much just flop tops. they are not triangulated enough to be real cages. and leave out inner structure bracing in favor of passenger space and cargo room.
i'm using p. spyder kit i got cheap to start out with, but it's lacking in so many ways.
i know some bawk at bleepin jeeps, but he does have a fairly decent vid on cages and triangulation and keeping tubes inline and why.
i've found a good bender and die and raw tube is cheaper than any boxed junk. i had the plan to do just this but when this PS cage came up NIB and dirt cheap i jumped on it. but there are parts i won't use and parts i cant use and parts i need to make, so i really needed that bender anyways and coulda done this from scratch. sure the investment is about 6-800$ but so is a crap cage. and once you own this crap you could recoup funds making bends for others.