My carputer is being built into a confined space. At this point, adding a PCI is not an option.
So what about the PAC + IR USB + Girder? Girder is meant to work with IR. The only issue is that the FIR connector is not compatible. So the last option for me is an external IR interface. It seems simple enough... "seem" being the operative word.
When I get off work (yes I'm working on a Sunday and it sucks), I'll sign up to Girder's forum and see if anyone there knows of anything that could be used.