I agree with Bob. The B-bodies have decent engine compartment room to allow for bigger tubes and smooth transitions. If you are having some built organize them in the collector respective of firing order. Also, consider if you will upgrade power-wise or any other significant powertrain changes (e.g.- tire size, trans gearing etc.) and bias the new headers based on that. A set done well can cover a decent variation in power without compromising much performance. The other major advantages is when done well, plug access and removal/install can be made easy...I know in the past for me, I would be willing to have opted to spend the extra time/money to avoid the aggravations. Multiply the 'aggravations' by each time you need to do something and they quickly 'pay' for themselves.