Thanks Brett. Conventional tuning just isn't worth the price now. The exchange rate has goosed that one. But a 50 horse Nitrous chemical super charge makes sense. Need to get the fueling sorted first so maybe next year if all goes well. Gives me time to read up about it. Looks like £600 is realistic from that website. Only thing it might make it even more difficult to sell. But then I'm not planning to anyway.
Good luck with the run. Will be listening for the bang (When you break the sound barrier

) in Halifax.