It does sound reasonable. The same thing applies to the Gen2 and Gen3 M62'*.

Gen V'* move the same amount of air as a Gen 3 with 2 tenths smaller pulley size. A 3.4 on a Gen V is like a 3.2 on a Gen 3 in the amount of air moved however because the Gen V is spinning slower not only do you get the benefit of more air but its also cooler air so more boost with less knock.

You should start with a 3.6 on the gen v and headers. A car we just dyno'd with the same mods (nothing else) dynod 242 at the wheels for a 50whp gain with a 3.6 pulley!

Whoa whoa whoa, just headers, gen V and a 3.6 gave 50 whp? Wow, no wonder those are a hot item.

With the Gen 5 and your mods, you should be able to run with these sizes.
I run a 3.1 on the street and a 2.9 at the track with race gas.
With the water injection I can run the 2.9 all the time.....and I am.

Where can we get one of those Gen V blowers :?:
I've seen the ported ones offered at INTENSE.....but will they take a trade in on a Gen III :?: The $700 core charge is

Ed Morad, gtped@msn.com or you can ask Oneil about the one he has had sitting at our shop for the past 6 months