i can only get a dual gauge pod for my 98 gs-t spyder and i was wondering what would be the best 2 gauges i should put in.

Boost pressure, and an A/F gauge. Bar none.

do you have any recomendations on what type and where to get a good set that is decently priced?

Any gauge will do just fine... just when u get a boost gauge, the preference (IMO) is mechanical, not the electronic types. Just get one that suits ur needs (you dont need one that goes to 60psi, and one that only does 8psi isnt enough) your budget and looks good. If youre planning on doing any serious work to that car Id suggest getting a wideband too.

so like a 30/15 boost and a 30/15 vac would be good from autometer. but i dont really know where to get a wideband guage. how would i put in a wide band?

AEM makes good widband buy its pretty exspensive.