I run an XFI system on a B 496 in a '70 Challenger with flat hood. With the short throttle body, M1 single plane and mild drop base air cleaner, it just fits. I believe the standard Cuda hood is bulged which should help clearance... still the Victor is higher, the RB is higher and with a taller TBI throttle body not sure it will fit. With a short port injection TB it probably would fit.

As many have posted, going bigger (to a point) on the TB does not hurt drivability with FI like it does with a carb. My non progressive throttle body has great throttle response... almost too good. Crack the throttle at lower RPM, all 4 barrels open and you are moving. A progressive TB would be smoother and also easier to tune the acceleration enrichment.