Thanks everybody for the input. Yeah, I admit it's at least a bit odd to try to be by the book in a place where maybe your car is the only one done like this. However the decision comes from experience when I first tried to decide on the build. I started with f.a.s.t. in mind, then keeping in mind I would be competing in Europe, I might as well put Stealths instead of 906s, then why not trickflow 270s, and a Max Edge port Indy 440 2d, because it somewhat resembles stock, and paint everything turquoise? But then I was warned about detonation from the increased temps generated by using manifolds, so then I said it would be best to use headers...
It is a slippery slope, this. At some point I realised I had lost my original goal, so I had to step back, take a good, long look, and see what this car is about, what makes it special to me. And that is that I have a restoration that makes it look like it rolled out the factory door yesterday. So I reason everything I do, I must do in keeping with that original goal. Only make it fast, because kids need to see these cars at full tilt, not trailered everywhere, and rolled barely above idle. If this hobby has any chance of passing to the next generation, we need to make kids passionate about old cars, lest they keep thinking of automobiles like apliances, as many youngsters begin doing.
So after rebooting my build perspective, suddenly it makes sense to spend money on porting factory iron heads, or cutting up & rewelding a factory intake, or have a custom cam that makes the best out of the restrictive exhaust manifolds. BTW, any of you guys follow David Vizard & Uncle Tony with their Mission Impossible 318? I'm not exactly mirroring that, but the general idea goes in the same direction. If I swap a better part than what came from the factory, what justification would I have to stop there? Headers are just a couple hundred bucks away...
Thanks GrabberOrange69 for confirming that the 570cfm holley was on auto 440 mopars. Most probably it means the 350hp variant, judging mainly by the low flow... So I guess nobody can confirm that the 68 Charger had a Holley on the 440?
BSB67, do you mean the carb you mentioned was an option?