Radiator: Find a ae71 rad in good condition with 14inch thermo fan wired as per whitzls diagram to the stock switch.
surge tank, pump, new feed line under the car, intank or lifter pump, fuel filter, all new EFI rated hoses.
Tailshaft : Custom = $300+ get a yoke from a t50'd car measure ur length and take to a tailshaft place. get new uni's too.
pedal box: get a ke55 manual one. Has longer studs for the master cylinder mount. this is what gets difficult sorta. You need to research a bit and have a look at it and work it out. You'll need to cut some of the pedal box away. Research and mocking things up will help.