I'd ask Andrew (Blue Missile). I know he is running some in his Duster and he has almost as many electronics in his car as an F16 fighter jet. He posted a link to them in his thread. I'll try and see if I can dig it up as that thread is quite long
EDIT: He used Cir connectors. Here's a good example of them.
http://www.hubelectronics.co.uk/pro...-circular/milc-d38999-standard-circular-range
He has some pics on this page of his thread
http://www.forabodiesonly.com/mopar/showthread.php?t=48363&page=39
he crammed 34 in on the same connector so maybe they will suit your needs. I know you are looking for a weatherpack, but I figured I would come back and edit this post and not leave ya hanging