The Sonoramic Commando Intake?

Port injection/EFI would be the way to go with these if you want take away a lot of tuning issues because of the 'wet'-intake runners.
Injecting the fuel right before the intake port leaves a nice dry traject for the air to arrive and still do its ram-effect.

I'm thinking of converting to propane fuel for the same reason. A dry fuel has much less mixture-issues, especially when cold.

The current issue I'm facing with my setup at the moment is heatsoak because of the underlaying headers in the car.
After driving for a while, underhood temps get so hot that the engine starts to detonate.


Here's an older pic I received way some years ago of an EFI-setup on a set of 'short' longram intakes... ;)

[URL="http://img.photobucket.com/albums/v628/BigBlockMopar/440-LongCrossRamSetup/FuelInjection-XRam.jpg"][/URL]

Coating the headers/maniflds AND intake would help immensely. Also consider wrapping the exhaust in addition to coating. What you may want to consider too is opening up the airflow into the engine bay. Careful re-routing of plumbing, insulating fuellines, different airfilters, even moving or eliminating certain seals around the engine bay may be just enough to solve your problem. Since this is obviously a non-stock build, have you considered cowl induction, louvering or ram-air ala the old Olds 442? From the photo those middle header pipes aren't doing you any favors...