Hi all, I’m looking to do my first mod on my 89 LX 5.0 convertible. A few here recommended sub frame connectors to stiffen up the ride. My mechanic said the same thing and flowmaster 40 series to make it sound the way it’s supposed to. Can anyone send me links for which ones to buy? Mechanic told me to use summit racing to purchase them from. Just want to make sure I buy the right ones. Came across these.