I think you will regret every second of it.
The 67 in my car lights ridiculously fast.
At 600+whp the turbo still has a bunch of head room.
Your lil guys will be running out of steam in the upper RPM's and breathing fire.
Well this probably won't happen on one of my own cars. I would love to talk a friend into letting me go to town though. I have a ball bearing "67" on my car too. I wouldn't call it ridiculously fast spool, and I still don't understand why everyone on this platform seems to be immune to feeling/being annoyed by turbo lag. Probably because automatic trans/downsift.
Mine doesn't come on until maybe 3200rpms on its own, and then proceeds to ramp up the boost so quickly it's darn near impossible to get out of the throttle quick enough to avoid wheelspin. I hate it...it's miserable to drive without the supercharger going as well due to how peaky/non linear the powerband is.
But really, I know pretty much what to expect with this. I mean on the extreme small end of things, I just did a big 16G on a Bonneville for a friend on a super tight budget...talk about underwhelming on the top end...we're talking like 350 crank HP. Boost falls off to like 5psi up top. But it does exactly what we wanted it to do, which is make the car pull/feel almost exactly like his northstar-powered Bonneville....and he's plenty happy for the $550 investment, lol. These would be a significantly more capable setup than that...easily 500hp, with minimal additional lag due to such a higher quality turbo.