I have Katech rod bolts. Other than that, it is all stock. I would pin it just to be safe. You never know when you might want to bump up to a 2.8 or so. As stated above headers will decrease your boost. Don't forget, boost is a measure of restriction. Any improvement before the MAP sensor will increase boost (air filter, CAI, T-body, intercooler etc.), and any improvement after the MAP will decrease boost. More boost doesn't always mean more power. Heads can help, but it would lower the boost number.