U.S. Cartool Mini Tub kit..anyone tried it ?

Hi,
I saw an auction on ebay for a US Cartool mini tub kit, from the actual company.
For 67-75 a-body cars
It was priced at $199.00, and showed pictures of what was included and what it looked like after it was installed
[ame="http://www.ebay.com/itm/301011327322?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT"]US Car Tool Mopar 67 75 A Body Mini Tub Kit Dart Valiant Duster Demon | eBay[/ame]
heres the link.
Has anyone used these ?
I bought and installed the subframe connectors on a 69 dart, they seemed to fit well.
I am at a stage where i can easily put these in.