I would guess and extra 10-15hp. Increase in compression will increase the power across the board, header might only help in a certain area. I would guess a good tune now would net you close to 5hp. Same mods on the VE and you could be in the 230s. I am not sure DEs are really worth upgrading for NA, gains are minimal compared to the potential of the VE. A stock VE would get you in the 170s, add some bolt ons, some cams and an tune and you are around 200.