if you use VT brakes, you really need to use a VT master cylinder & booster (which isn't a straight swap) or the pedal is ****.;
you are better off upgrading to the VE front brakes. They work fine with a VB-VR 1 inch master cylinder
that way you can keep your booster and just use a 1 inch master cylinder (if your car isn't already fitted with one)
VT brakes should fit under 15's (standard VT's were fitted with 15 inch wheels) and VE will fit under 16's (standard VE is fitted with 16's)
you will need a caliper adapter kit and hub to fit either VT or VE brakes, will also need the brake hoses for either.
However the difference with VE brakes is, you don't need to change the booster & master cylinder. Whereas VT you really need to or you end up with a really bad pedal.