To clarify, most regions' ITE rules (again, they vary from place to place) don't actually list specific cars. They tend to define what can - or more often, what can't be done to the car. It's probably an overgeneralization but pretty much all ITE rule sets require DOT tires. Some regions (WDC for example) have very specific rules - in that case, that cars must be built to SOME rule book, including from defunct series like the old Firehawk series.
Anyone interested in this option needs to get rules from their home region, and from nearby regions (to see if you have the option of traveling elsewhere if you want). You should also go to a couple of races to see what those rules look like in action. Some places have big ITE fields, and others very small classes.
K