On the subject of Zorks, check out this site from a fellow pelican
Rarlyl8's Exhaust Site, he's the guy to talk to for a zork.
As for the A/C, i'm about to get a beefed up system, and from what I've heard Khul is the company you want to deal with for extra coolers etc.
For the center console, you're thinking of the Better Bodies piece that has carpet on the sides and vinyl on the top, with a slot to hide the e-brake etc.
993 Style Console. Its not my taste, i think a Hargett shifter setup would be great, but that's just me. I know the gentlemen you speak of on Rennlist with the console, it looks great if you're about the "comfort" thingy. One day i'll stop gutting and start putting back in...
Good luck. And on the motor, resist the urge, but Imagine Auto does wonders for motors...