I am trying to do the same thing right now. I just grabbed the sleeper epic ROM because it was the newest and a stock copy the optimus v ROM and brooksyx's .smali file to compare the three. Fortunately I have the time right now, unfortunately the only programing experience I have is writing a hello world program in netbeans
Needless to say it's been a bit difficult to decipher between the 3000+ lines of code in these files to determine what is needed for sms in the .smali file.
Sent from my SPH-D700 using xda premium