Further confirmation that the XRS Corolla has a C60 tranny with a 0.725 6th gear:
The Ultimate XRS Sticky! - 9thgencorolla.com
@Funny- Thanks! That is a great suggestion. I'm sorry I missed that in your earlier post. My only concern is that the Echo FD was designed for a rather low-revving engine putting out <100bhp in a car weighing ~2,000lbs, while the XRS 2zz-ge motor was designed to pump out nearly 200bhp while spinning up to 8,400rpms in a vehicle that weighs ~2,700lbs. Can the Echo reliably handle these higher loads?