HHR fan in our small block Challenger. No hacking of fan required, lots of clearance.

The large engine bay combined with the small block seems to help with air circulation and cooling, as some with big block E-bodies have reported cooling problems with the HHR fan.

But for $40 shipped we couldn't beat the price, and it can always go on our test stand if it doesn't do the job (which it has for the last 2 years).