It wasn't hot rodding that I was looking at. I was thinking more of cost than anything else actually. I thought if there had to be a limited run for bespoke engines then it might be more expensive than say, transplanting the engines and gearbox from the MH60R/S, that was all. However if the airframe has to be strengthened and new rotors organised, plus all the required testing etc., then no. The extra 200SHP along with a new modernised rotor design would be advantageous in both speed and lift capabilities if it was spread over a large number (>70 - 100) of airframes, not 10 - 12.