Are you even allowed to run a sequential box in the series you plan to enter ?

I've got a modified version of the EEC 4 inlet using a extra 4 injectors mounted the same as the rs500 ones and according to the guy that had the engine done by HT there is nothing between mine and the 500 inlet on a engine specced like yours, well apart from the cost ofcourse lol

The original owner of mine who raced it back in 1993 said you would get 2 qualifying laps to a turbo on full power ( a claimed 565hp) just shows how things have moved on !