Gen V is a decent upgrade anywhere around the 3.4 pulley level or lower, dyno graphs have proven that you might not gain a ton of power, but your mid range tq will improve greatly, which is where the good feel and drivability is at.
I'm currently running a 2.9 pulley XP hot cam 140# springs, I guess I'd go with a 3.1 pulley with the gen v and n*.
I'll dig around, someone went from a 3.4 gen 3, to a 3.4 gen v and and intercooler, and gained only about 30-40 hp but gained over 100 tq, and a lot of tq under the curve. which is what gives you power everywhere, but I agree, the gains are larger the smaller pulley you have. Also its almost worth it just for that whine! haha
Yeah the Gen V noise is sex. It's so addicting. Especially when you have the silencer ports closed
Here's a video I made the day I did the Gen V swap, with closed silencer ports. Keep in mind this is on a stock 3.8" pulley. B*tch screams for stock pulley in the higher RPM levels.
Sounds like a few solid upgrades. If you ever find yourself needing a weird part/bolt etc, feel free to pm me.. I seem to have so many extras of everything lol.