Do you want smaller shaft bearings? Then go to the 03. 10 blade wheel offers lower pressure through the turbine, but the 13 blade wheels of 04-07 offers more surface area for quicker spool up. Blah Blah Blah, but the 03-04 make more hp than the 05-07. Sure they do. Sure they do. Keep telling yourself that while you are swapping the parts.
Do you want smaller shaft bearings? Then go to the 03. 10 blade wheel offers lower pressure through the turbine, but the 13 blade wheels of 04-07 offers more surface area for quicker spool up. Blah Blah Blah, but the 03-04 make more hp than the 05-07. Sure they do. Sure they do. Keep telling yourself that while you are swapping the parts.