Looking at the Whiteline site, the AE86, KE70 and T18 all share the same part number for rear bars. The front are common to the T18 and KE70, but different for the AE86. I'm not sure how different it is. It may fit OK.
To clarify things, The rear bar is just the bar. I don't have the D bushes (the ones it pivots in) or clamps or the link pins.
The front bar is just the bar with urethane D bushes. You'll still need the D clamp and link pins. You should be able to source these very cheaply from any DIY wrecker though.
I can post or courier them for you, but I'll have to look into how much that will cost and get you to send money in advance for them.