[D-CEL]

That’s easy (for a 385 series) If 600 is the magic #, just tell Keith to get you an aluminum block, P51 heads a hydraulic roller. All the power you want, with the weight of a small block.

FE's do have one and only one advantage over a 385 series.

Original Look.

The 385 is far superior in every respect. As it should be, given it was the replacement for the FE.

As for the poorest choice for a Cobra, that would depend on your intended use.
If your goal is to impress the locals with the “AUTHENTICITY” (LOL, sorry cant help it) of your REPLICA, an FE is certainly the best choice.
I go where the power is, and that road leads to the 385.

Jason