Do not know much about Indy Tunnel Rams. I do know that the Weiand Tunnel Ram that was on my Challenger way back in the early 70s has a little different base than the one in the pictures I posted, but had the Dom top and Dom Carbs. It never failed in the RPM range with a 430 CI Hemi that was shifted at 9000 rpm and through the traps at 10000 rpm. Never had access to a Dyno back in those days there were just not around. The Tunnel Ram I sold and that is in the picture above, we are going to try the Super Stock 65 68 Carbs on it with the normal Holley spread. They seem to be a fantastic carb and run fantastic on a after market cross ram in the other car and the runners lengths are exactly the same. Next year is when we will find out if they work. Might save us buying a set of Doms if these carbs work on the Cuda. With N Pro Stock there are no rules to the carburation. We have a single four Indy Intake on the wall so maybe that can be tried at the end of next year.