I bricked my Boost Ultra trying to build an ICS kernel for the Ultra. 1 brick was enough for me. If Bob says it's hard to do, you can be certain that it is hard to do. I might even say impossible but there is 1 guy I know that could do it: https://github.com/tom3q
I got some tips from him when attempting to build an ICS kernel but my kernel making skills in this area are infantile compared to his. Our only shot would be Bob but I think that possibility is slim to none.