Thanks for the feedback guys.
Steve - What kind of temps/humidity does your car see? In PA, we max out usually around 90 F. 100 F once in a while, but that's approaching record temps. Humidity is moderate. Here's a picture of Griffiths rear wheel well solution:
You can either run a single condenser behind the wheel or two condensers (one in front and one behind). I'd be tempted to jump right to the dual setup to ensure that my car stays cool and avoid re-plumbing if just one doesn't cut it. Thoughts?
Also, is there a general, practical rule of thumb for when you should take the jump from half bay to full bay I/C?