I REMOVED A BLITZ ONE FROM A SERIES 2 I SOLD... was only 4 wires iirc, very easy to fit looking at it. although personally i dont see the point in them, i never drive fast around my own town, i keep a pretty standard looking car and dont wish twocing twats to see me tear home n nick my cardriving steady for a good 5 mins should allow turbo to cool fine... just my opinion.