I have the NA rear end (4.08?) and I think it is great alternative for those with similar setups to that aren't necessarily pursuing uber amounts of power but want a very responsive and quick car in the midrange. My goal is to have mine trackable for VIR, Rockingham and possibly Roebling in the next 2 years and I would like for it to remain safe and reliable along with being fun and affordable on the days that I drive on the streets.