I just got a 1995 Q45. The HU was AFU. Cheapest replacement was $90 on Ebay. I wanted to add an AUX input or a full blown Bluetooth interface, so I bought a 2006 Altima Bose HU for $30. bought a Metra reverse harness for it and a radio harness for my 95 Q45 Bose HU. They both have 16 pin connectors, different from one another. The Metra harness for the 95 Q45 only has 13 pins, so I had to jumper the ILL Control, Amp Power On, and a chassis ground to the 2006 Altima harness. I connected a GROM AUX1 NIS02 aux input adapter(XM Sat version). I had to do some cutting to make the dash trim piece fit, but sounds great. I still using the original; Bose speakers and amps. I wired a dual USB power outlet in line with my front cigarette lighter with a 5 amp in-line fuse. It sounds great, and only cost me $127 total. That's for altima HU ($30), ALtima reverse harness ($9), Q45 harness ($4.73), GROM aux in kit ($66), antennae adapter ($6.54), and $10 in miscellaneous parts.