Think I made some progress on modeling this by accident, I can go on full detail on how I made this:
got the 3 model files from Sonic in SRB2, copy them to KDLC in mdls of SRB2K, then rename the 3 files to say "SRB2SONIC" instead of "SONIC" and THEN, you go to the mdls.dat file in SRB2K and you...