Are you shure those cracks werent from "nitrous backfires" while running a wet kit? The Ford intake is the same material the LS1 intake is made of and they never crack...never from using nitrous. Ive run a 325 shot through mine (200 dry and 125 wet) and had no intake problems.

All of the above info is good stuff. I just might add using a window switch to activate your nitrous at a specific rpm and shut it off at a specific rpm is a nice safety feature as well as a fuel pressure safety switch to shut the system down if fuel pressure falls below a set minimum. There is also a new add on safety feature that uses an 02 sensor to instantly shut down the system should it become lean.

The more of these safety features you use the better off you will be. Also always ensure your fuel system is up to snuff and a 125 should be no problem