Drop in Pistons for KA24E?

[onosqv]

I was wondering if getting the Nismo factory upgrade pistions that change compression from 8.6 to 9.1:1.

Was wondering if these were a "drop-in" upgrade like the camshaft. I'll be doing my camshaft this weekend (thanks for the part Niznos ), and if pistons are doable, I'd like to get everything done in one fell swoop.

If these don't require extra modification, I'm not sure which one to get (89.5 mm or 90mm).

Also contacting courtesy parts about this.

Thanks guys!

http://www.courtesyparts.com/nms/s13/s13_1.html

[180fan]

I think those pistons are the same pistons found on the early model SOHCs that had the 9.1:1

[onosqv]

I think those pistons are the same pistons found on the early model SOHCs that had the 9.1:1

Ok, I guess I'll just wait til my engine blows up and I have to rebuild to put in forged racing ones .