I am buying a hks2530 next week on the basis that i want to have response.I currently have 250rwhp with standard turbo,walbro fuel pump,front mount,11 psi, power fc.Have been told response from 2530 is even better than stock turbo.A bit sceptical about that but will let you know once it is installed and tuned.Main reason i am going for this turbo is for the fact that it will have stuff all lag and i can boost it to 16 psi without it blowing.