Sub frame connectors

Well, Griggs has a few kits, but they are complete and pricey, they advertise being modular modifications, meaning you could probably buy the chassis bracing kits independent of the competition package. As far as labor/install goes, spend the extra cash for a reputable mustang shop that will stand behind their work rather than a shop that's cheap up front but won't fix their mistakes. I'd also recommend looking up kenny brown, but they are shutting down until their counterfeit suit clears up.

Call griggs, they make good stuff for your year.