I've got to replace my ECU on a 2000 toyota tacoma and can't find the ECU. It's supposed to be behind the glove box. Anyone know what it looks like?

I cant say for sure but they are usually behind the kick panel (if sitting in the passenger seat, move your left foot left, where it hits is the kick panel), the ECU should be behind that.

It looks like a small black or silver box with heaps of wires coming out of it, it will have a connector that can be pulled out with a bit of force but be careful not to break any pins pulling it out or putting it in.