Classic Auto Air, etc...new A/C systems

[69Tom]

Was wondering if anyone out there has any expereience with any of the classic air systems that are being made for classic cars today?

The interior on my '69 Nova is near mint, so I really don't want to attempt to find an A/C dash pad, vents nice enough for an original A/C system. So...I was considering geting a new aftermarket under dash A/C system.

1) Has any of you used an under-dash system?
2) How effective are they in cooling down the interior?
3) Any company's system better than the next?
4) Looks like I'll spend a little over $1000 for one? Is this the average cost?

Not buying one right now, but I need to start saving for when it gets far too hot to have a non-A/C car in Phoenix.

Thanks.