Backspace clearance?

[LS240]

I sincerely apologize if this has been covered before. I did a search but my searching skills are not too hot and I didn't turn up any clear info. So...

How much backspace clearance is there, front and rear, on both an S14 and an S13 hatch? Figure on either 17 or 18 inch wheels, and eventually I will be installing coilovers, most likely Tein. Knowing this will make picking wheels sooo much easier.

Just so you guys know, I don't own a 240 yet and I'm sitting on the fence trying to decide between an S13 hatch or Kouki S14. Whichever one I choose, I'll eventually be going widebody(most likely just blisters or pulled fenders), so fender clearance doesn't matter much, as that's variable, however; clearance to suspension does, and will make all the difference in deciding on wheels.

If someone just has a link to this info or could provide me with specs I would be extremely grateful.

Thank you!
-Layne