Don't flame me, I used the search and read several threads and it left me cornfused. Are all classics the same port and it's the highport correct? TIA :)

No. IIRC all the 94s and after a certain date in '93 (93.5 model?!?) Nissan changed to low port.

91-93 are highport.
94 is lowport.

Doh! Beat me to the answer.

anything after 7-93 is going to be a lowport.

Ok so what are the advantages of hi/lowport? and what was nissan thinking? they changed things up only to confuse us?

High port better flow, more power:D
Low port, lower emissions:eek:
Government smog restrictions, take away power:mad: