The parts required for conversion is booster/master cylinder combo, the booster & m/cylinder gasket & also the bracket which operates the brake light switch. It is longer than the non power brake one & is a mungrel thing to fabricate.You cant lenghten the old one it hits on bracket under dash. The steering column has to be removed , the fire wall has to be redrilled with a 2 1/8" hole saw lower down there are 2 bolts under m/cylinder which have to be removed the nuts inside are drilled thru.The bolts which originally held master cylinder have to be knocked out, 2 new holes have to drilled about 12mm higher up firewall.The push rod & brake lite switch bracket are swapped around on brake pedal.
When booster is fitted put a 1/2" nuts on before nut to act as a spacer otherwise socket will bottom out before tight
Overall is a fairly hard job with a lot of fiddling to get every thing in patience is required