Old nick set

i was wondering if i could get the old,rudy and koala cloak set from this emporium http://www.facepunch.com/threads/1124313 as props in Gmod?

heres a download link to the old rudy http://www.mediafire.com/?mu03cf660cpf5qg and a download link to the koaloa cloak http://www.mediafire.com/?l4uumz079tme4ud

so can any one convert those models into props?