The Porterbuilt frame stiffener doesn’t just stiffen your frame, but it’s also the transmission crossmember and crossmember that the trailing arms attach to. The transmission mount is highly adjustable and will work with any transmission. It also has the bearing carrier mount built into it if you want to run a two piece driveshaft. I’m running a one piece driveshaft and Performance online trailing arms with my frame stiffener.
