Dont see Alan Simms running 900hp from his rover in CCSE(not without shit loads of NOS) there are many 750hp cossies that are proven, still using cosworth block head and crank, these rover engine are using a completly different head design with isn't even rover!!

Anyway if you claim to be running 950BHP ENGINE IN YOUR CAR THEN YOUR GONNA NEED MORE THAN JUST THE RIGHT DIFF We at Hauser racing can offer a couple of routes to take but the main questions are what is its use and how much can you afford to spend?