Lightbourne - If your P229 is new, the springs should be compatible with the E2 grips without the whole kit. I just bought a new P229 from TGS that came with E2 grips and tool. Unfortunately for me, I have large hands and the E2's felt too small to me. I purchased the standard Sig grips and screws and now have a set of E2's that have never been used. If your interested in the grips, I'd be happy to sell them.
"It's what you learn after you know it all that counts."
If you can't be a good example, then you'll just have to be a horrible warning.