Both! .. if have access to e85.. do it.. just upgrade injectors. Full stack intercooler... You can deep into the 12s without a cam on an nice IC e85 setup. Just tune for it and can
net some good results.
PRJ was at 12.3's on e85/intercooler with stock cam, stock gen3 blower, stock TB, ect... Just a lot of tuning work and good 60 foots.
If stock pump, invest in a Racetronix harness and pump setup and will do you well on e85.