I agree. Given the prices of these amps I've seen elsewhere, I'm pretty skeptical of that $41.25 price tag. This is turning into a major headache. I've scoured the internet for the past several hours trying to find anything that would tell me a difference between the Q1, Q2, or Q3 versions of these parts. I can't imagine them not working when the infinity sound system remained, at least as I understand it, the same over the course of crossfire production. Do you think it would be worth it to try it? Thanks again for any help or advice.