cheers mate, think im starting to get a thing for jap spec stuff haha, picked up a starlet GT turbo the otherday and it was rammed full of JDM goodness!!!
Those highlighted above are incorrrect, 1.0 are the same size as 1.3 pistons only difference is the dish because as frank said 1.0 fit into the 1.3 bore.
You wouldnt need the rods or crank as that would turn it into a 1.0 with 1.3 cams.
if im right then 1.0 pistons will increase compression ratio thus increasing the combustion in the chamber, not sure if its beneficial as ive never done it
main diference is pistons, crank, rods and cams
didnt you spend alot of money repainting the grey one? if i were you keep the grey one a turbo and get a spare micra 1.0 or 1.3 to run around in until the turbo is set up correctly:)