yeah i definately would not get to hung up on the power figure lee, you are going to be over 500bhp which is putting your car in the "fast" bracket, mine has been at this level now for nearly three and a half years and only after all this time do i feel the need to up the power a bit, i find low boost sees off (with ease) 95% of cars on the road, the other 5% i use high boost but this is very rare, as jon states above you need to buy the very best tyres you can afford and RLTC should be the next thing you buy, as for the auto box i am very sceptical of BL quoting 700 hp, yes they probably would handle this power but for how long ? mine now has close to 30k miles on it and still shifts the same as when i bought it, however i treat it sympathetically, very rarely run full power and watch the temperature gauge like a hawk............have fun