Just replaced master cylinder(was leaking) bled everything,now she pulls to the left. Good pedal pressure, nothing else seems wrong. What gives? 70 with front discs.

Can only be two things...
1)either you still have air in the lines, or
2)you've got a bad or twisted brake caliper hose.

If it pulls hard to the left, it will be a front brake. If it is a mild pull, it is likely a rear. The cause can be contaminated lining, causing the friction to be unequal side to side. This can be the result of a leaking wheel cylinder (rear) or a leaking grease seal. Another cause for fronts is a sticky caliper piston, which will not brake as hard as a good caliper.
To check the pull, take your hands off the steering wheel and gently apply the brakes at a low speed. If the wheel turns quickly, then it is a front brake problem.

Thanks guys! I'll check it out. graemlins/beers.gif