Stage 4 is coming out soon, but the stage 3 should be good enough for 99% of the builds.How is the IP4000 stall on the street? I have seen the video, but that video is horrible. Only one time do they get on the car, and the other times they drive like a snail to keep the RPM low and mask the slipping that a loose stall always has.
I notice that going thru FTI directly gives you more options and a $199 lifetime guarantee option. I would at most go with the 3800 hard hit converter. The 6466 hits hard enough with a tight 3200 stall.
ATF only makes a Stage 2 and 3, unless I missed something.