Are you referring to the multi~Pin firewall CONNECTOR? Where all the wire plug in to to pass through the firewall?
And Also the instrument cluster laminate card plug well?
If so you have a few options, Painless Harness, The Dealer (maybe), Special order through your local speed shop, or The Bone Yard..
The last is the Cheapest, but you have to cut and graft wires, as opposed to Crimping and soldering pins in a new connector..
Maybe Draw a sketch of what you have and scan and post it so we can get a better Idea..