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Spring question. In any multi leaf rear spring, there is what is called a "tie" bolt that holds all the leafs centered. Each leaf has a hole in the middle that the bolt lines up with the head of the bolt going into a hole or slot in the spring pad. It is not uncommon for that bolt to be broken...

The headers were just a set of Pacesetter coated long tubes. Still running cats.

As a new vendor on this forum, we thought it would be kinda cool to show what can be gained with a dyno tune. The First graph is a 2008 5.3 that had headers, cold air and a tune. The red line is bone stock, the blue line is after the mods. 34 h/p and 27 torque isn't bad for a couple of bolt...