Ha ha yeah the stock rears will look like tiny pimples inside open 17's. I appreciate that for sure.
No there's no booster mod that anyone really does on these cars. What Gav and I have done is instal a kit from a german company called n89 motorsport that lets you run a VW Bora master cylinder. The piston is a bigger diameter meaning that a shorter amount of brake pedal throw is needed for the same amount of actual braking at the wheels. It definitely solves the long soft brake pedal feel of the stock car. I just don't particularly like how it works in unison with the stock booster. The shorter pedal to me becomes overly sensitive. It'd benefit from a smaller booster but that'd be a bastard job to do and I don't have the stomach for that. Was thinking of running smaller vac lines to the booster, a restrictor or a vacuum limiter instead just to get more of a wooden pedal........when I get motivated again.