I stole this from SolaraGuy.com. It's a list of Pulley/Boost/HP/Tq numbers.
4 psi = 3.2"
5 psi = 3.0"
6 psi = 2.8"
7 psi = 2.6"
Based on that, you can figure out anything in between.
*=Pulley Size
-=Max Boost
+=Max HP @6000 rpm*
>=Max Torq. @4400 rpm*
*2.00
-10.00
+343
>373
*2.20
-9.00
+332
>362
*2.40
-8.00
+320
>350
*2.60
-7.00
+310
>339
*2.80
-6.00
+298
>316
*3.00
-5.00
+287
>294
*3.20 (STOCK S/C FROM TRD)
-4.00
+276
>271
*3.40
-3.00
+264
>260
*3.60
-2.00
+253
>249
http://www.zer0.info/solaraguy/viewt...ghlight=pulley