>>657669499% of the time an SD head on an MSD body will look fucking horrible. The exceptions are usually specially sculpted to look good with those proportions (ex. DearSD is an SD size head on an MSD body, MDD has a shoulder and neck size meant to work with normal DD heads, and a few companies have trundled out similarly proportioned lines). But a random hybrid of those proportions is almost always going to be laughably bad.
Pic related, it's a 6-7", 7-8" and 8-9" head all next to a mini body. Most SD heads are 8-9".
