When you compare power potential between 603 and 606, how do you account for the difference in valve count? Would a 603.96 and 606.96 have comparable dyno results with identical pumps?

Does the simpler exhaust manifold of the 606 and 603.971 mean higher or lower EGTs? I imagine the more direct shot into the turbine means quicker response, but moving the restriction upstream will raise EGT.

You're running a wrapped manifold, right? Or is it Jet-Hot coated? Any plans to wrap or coat the .971 manifold before installation?

Can you measure EGTs simultaneously at the #1 runner and EGR supply port? I'm curious to know the energy drop across the trap replacement pipe.

Sixto
87 300D