First of all it wont fit. You're better off buying a GTR style bar made to fit a GTS-t from someone like East Bear Sports in Japan.
Secondly, putting an S13 front on a 180SX IS NOT a Stawberry face conversion. Putting an S15 front end on any Silvia is a Strawberry Face Conversion. The name comes from the Japanese translation. In Japan, S15's are referred to as "ICHI GO". Now ICHI GO literally means ONE FIVE. However ICHIGO also means Strawberry. Hence why it's called a Strawberry Face Conversion.