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Indy claim some benefits from the super large plenum on the modman...meaning none of the runners go "lean" due to distance from the source....but the short runners ARE a worry.
I guess Ill find out soon enough....
The only real way to find out about even fuel distrubution through an intake manifold is by recording egt's per cylinder at the dyno. The factory intake manifolds I tested had all 8 cyl egt temps within 5*'s at 6000 rpm. Giddy up. A carburated DP intake needs some help with air flow. Maybe we have to break out the popsicle sticks and epoxey or someone may come up with the correct jetting. With a DP EFI intake you can dial in every cylinder for timing and fuel. 
I have used NGK plugs for checking heat in the cylinder by watching how much of the base of the plug plating gets scorched. I shoot for about 3/4 scorched with alky, don't know how much heat difference there would be with gas. This would at least give you a rough idea for WOT high rpm.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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