SVT is a trim level, much to the purist's chagrin.
The P## in VIN in the code is trim level, of which P68 is SVT.

BTW:
P65= 95-98 GL, 98.5-99 LX
P66= 95-98 LX, 98.5-00 SE
P67= 95-98 SE

2005 Nissan Sentra 1.8 SE, Code Red. '00 Tropic Green Ford Escort SE [Contour's little cousin]