[Signman]

For reasons David mentioned, believe there is potential with sequential but not necessarily in the range we would assume.
Upper RPMs would be little gain unless all the legwork was done and then it may be minimal for the cost and effort. But consider what we pay for 5 HP..........
The greater benefit should be in low / mid range RPMs getting the car moving and to the 330. When foot-breaking the effort may be worth it making the car easier to drive.