They make the 10:1 pistons 0.20 overbore dont they? Im not sure if they do I did a search but didnt find it and I also looked at the website but cant remember if they do just thought I would ask?

http://www.nismoparts.com/catalog/?section=418

Look toward the bottom of the page.

So Im assuming that they do make over sized pistons? Sometimes when I look at numbers with decimal points I get thrown off if you know what I mean? haha

ok nice but now will they work in ANY sr20 or are they B14 specific?
Clay

They will work on any '91 - '99 SR20.

well i drive an '01 so i guess it doesnt apply to me oh well.....

They might fit, I'm just not sure if the roller motor had different pistons than the other one.

Heres the spec on the SR20DE roller pistons.
Pic1 (http://www.primeragtp11.pwp.blueyonder.co.uk/jpegs/piston1.jpg) Pic2 (http://www.primeragtp11.pwp.blueyonder.co.uk/jpegs/piston2.jpg)
Enlarge the pic and you can read the figures.
Also, i have a set of the Grade 2's sitting here, if you want them, lemmie know. They came out of my engine when i installed GTiR pistons and have covered less than 30K miles. They are the 10:1 pistons.