anybody know if there is any big brake upgrade that can be modified to fit my 90 2.1? i figure that all i need to do is find a kit with rotors that have a 4x100 lug pattern, but so far i haven't been able to find anything. i figure that i can machine an extension for whatever caliper comes with it.

 

I am not aware of any..

I dont think the juice is worth the squeeze on that venture anyways.

Have you thought about getting some good rotors. SS lines and semi-met. pads?

 

The 3g Si's have the same rotor/ caliper set up as the S and Si 4g's. You could increase line pressure with the S model's 7/8" master cylinder. That'll give you 13% more brake torque with the same amount of pedal effort. The pedal throw will increase some but that extra throw makes it easier to modulate the brakes. Human abs. Hopfully I'll find something new with the 3g I have access to now.