Cool project. I would say the biggest consideration with the motor/blower is heat. You need to figure out a way to keep it cool pass after pass. Is this a bracket car or a heads up racing type car?
Unfortunately, from everyone I've talked to about meth kits on PD blowers, it is very complex to set up on a PD blower, but if this is a drag car, you could probably figure something out???
Can you run straight meth. That would keep it cool for sure. Don't know if that's an option.
I have never run E85 but that would help with cooling, wouldn't it?
My experience my hellcat the last two years has taught me that heat is the biggest issue with a PD blower.
Don't know if my response was much help, kind of just a bunch of questions, ha ha.
So what's the build, 9" diff braced, TH400? Transbrake?