PI intake, buy one NEW, I would not buy one used. Even the metal crossover PI intakes can fail under the tstat housing. It is thin plastic and a gasket and and warps over time. Not anytime soon, it'll take a good 100k to do it but LOTS of the used intakes that are for sale are off higher mileage cars. I can post pics if anyone wants but my metal crossover intake failed in this exact way. Brand new intake from AM or LRS is $215 shipped.
Also, NOTE that for a 96-98 car you will have to either use the metal crossover from your NPI intake if it is in good shape or drill/tap the blank flat spot by the tstat housing for the second coolant temp sensor the 96-98 cars use. The 99-04 cars only use one sensor. I did this myself with an old drill press and a $5 harbor freight tap. I forget what size it is... its on the interwebs though.
And yes, the typhoon intake is not the greatest. Its only benefit is it is metal vs plastic except that you don't really need a metal intake unless you are running a good amount of boost of a bunch of nitrous and in that case you might as well just go with the Eddy and call it a day since at that point you can actually benefit from the Eddy.