Buick GN Hydroboost mount kit for adapting Astro van or similar hydroboost

Not all hydroboost rods can be modified so select carefully before you buy your used hydroboost unit. The firewall plate matches the Buick Turbo Regal/Grand National, T Type power brake bolt pattern (the plate on the left in the first pic) and when welded up lets you simply bolt up your self sourced Astro van hydroboost with the 6.10" brake rod and 1/2" hole.