I'm using the etx1200. I started with a etx900 but upgraded to the 1200. Not because of the battery though. The 900 worked and cranked just fine. But I figured with ECU, CDI, TCM, stereo/sub, etc and most importantly the ford contour fans...I'd want a little more. The contour fans can spike up to 50 amps on start up. They settle in at ~15 amps running. So I upped to the 120 amp battery and alternator. I'm running a Dakota mini starter. Both the 900 and 1200 spin my 10.8:1 414 stroker without hesitation.
