Is there any good before and after tests on these aftermarket suspensions?

By good I mean a couple of things. Third party, same rims and tires and if possible same brakes?

Not interested in manufacturer's claims, seen too many shenanigan's over the years. Like running 305 heads on a 350 and claiming 40+hp gain over "stock" heads.

Almost not interested in magazine claims, seen too many shill for the sponsor shenanigans too, unless it was a three way head to head, like stock vs XV vs RMS vs Hotchkis type article, if it exists.

I have seen articles were an aftermarket suspension was put on a Mopar and showed improvement, but they serious upgraded the tires and rims too, so who knows what did what and that, in my book, is not a real test of the suspension swap.