Larry, I know there are a ton of variables like air, traction, temp etc etc, but I hope you update this with some track numbers when you take it out. Just curious what difference it makes in the real world, with no other changes.
I know you said a buddy was making a scoop, which is probably the best performance route, but I'm curious what changes it may make between running with the stacks vs without, or with the scoop, IF you happen to try that. Certainly not trying to push you into doing changes for me though. IF there's any difference at all, my guess would be, in order of best to worst: scoop, then stacks, then open.
Another good thing about the swap....you don't have to bend over as far to do jetting changes..lol
Heck, I never change jets. LOL!! Since they are side saddle, you don't have to pull the carbs to change jets. Though it was mentioned on the dyno that I may need to throw 1-2 in it due to air speed on the track compared to sitting in the dyno room. At least for spring/fall weather. I am going to try to remember to call my data logger supplier and see about adding an O2 sensor into that. I had a wide band on the car for a few years but removed it and put it on the black car for better tuning on it.
As far as induction changes we were talking about that at lunch today with the shop. They wondered what I was going to do with the hood and I told them I had a flat hood on order. The discussion came up about needing a scoop as the velocity stacks may be in a vacuum situation at near 130 mph and may cause a lean out? With the TW under the hood, I'm not sure what kind of turbulence was going on under the hood? I have no core support to speak of, it's all open and then the grilles in the back of the teardrop. So, what is all going on? The world may never know. Time will tell.