that's why they added few meters in the frame of mk2.
what we know about mk2 upgrade:
new and bigger radar
smaller nose cone
retractable refueling probe (most probably one used in jaguar )
IRST
few senors upgrade
lighter HUD
nope
i remember someone asking HVT about this, he replied by saying that there is just no space left. he said its a 25 ton Ac smaller than F22 and bigger than f35 in dimensions so there is just no space.