Depends if the car already has the later model booster though. If it doesnt there is a big difference.

If your going non power assist, dont bother with any OEM units. You need a pedal which is a dedicated unit specific for non power assist. You will not have the right ratio with a power assisted pedal. You need this: http://www.ebay.com.au/itm/WILWOOD-FORWARD-SWING-MOUNT-BRAKE-CLUTCH-PEDAL-ASSEMBLY-TRIPLE-M-C-WB-340-3950-/140845643925?pt=AU_Car_Parts_Accessories&hash=item20cb0df895
and one of these: http://www.ebay.com.au/itm/BALANCE-BAR-ASSEMBLY-ADJUSTABLE-BRAKE-BIAS-PEDAL-BOXES-/220965872897?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item337297a501
These are also available at www.carshopinc.com . They also sell the master cylinders to suit the pedal assembly. The one I added from ebay is a forward mounted master cylinder which will suit best. Master cylinders cost about $80 each. You will require a formula to workout the ballpark figure for the master cylinders. You need one for the front and one for the rear with the balance bar to set the bias to your liking. You can also run a in car bias adjuster to make like easier too. $100
With this system you wont need many mods to fit it and it wont foul with anything under the bonnet but will need to have some lines or adapter to tap the lines from the OEM lines on the firewall to the new master cylinders.
If you dont like the feel of the brake, just buy a new master cylinder and install. They have a huge range so if you go to a bigger brake system you can upgrade very simply and easily.
Here is a thought on a cheap option for a sick caliper: http://www.ebay.com.au/itm/AP-RACING-4-PISTON-REAR-BRAKE-CALIPERS-PN-CP5410-4SOL-5SOL-W-LINES-NASCAR-/180916963034?pt=Race_Car_Parts&hash=item2a1f7dc6da
Only way to fly..
 

My 91T has standard brakes (+ ABS) and the MC needs new seals. The pedal slowly goes towards the floor. When I eventually found the right part number for the repair kit, it is "Discontinued". So going to replace the MC with a bigger bore. I was thinking 15/16" might be all that's needed to get an improved 'pedal', but this thread talks about going to 1".  I still have the original callipers and I see people here discussing going to the GEN3(4?) bigger brakes, which I am not doing at this time.
  So should I go 15/16" or 1 " ?    (and will the 4Runner version suit my ABS system ?)
 I presume I should also replace the booster unit...so any recommendation to go with the new MC ?
 Thanks chaps.

Thanks Danti,
 Can you describe the difference in the pedal's feel and travel ?  Was your previous MC was in good condition or showing signs of wear?
Theoretically, a bigger bore means less piston/pedal travel, but needs slightly more force (leg muscles) for the same braking power as a smaller bore. Is that what you found ?
 Arguably if the extra force was still small,  then perhaps a 1" bore might also be considered, but maybe that's too9 much, a rock hard pedal that you have to push like you're having a baby.
 

Thanks Danti, I think I'll go the 15/16" MC.  Is that the MC on the later SW20s ? or did you get it from another
Toyota ??

Will do, thanks Danti

Thanks 5sgte, must remember.