i remeber that thread on sr20forum, i was involved with it, arp techincal apparantly said to him they had nothing suitable, the techincal rep said to me there were no issues they knew of ( i was asking about gtir) i never really got to know what the outcome was tbh
from what i have gathered since the normal 11mm sr studs have a sort of shoulder on them that is wider than the thread, the 12mm gtir studs do not..