I spent a couple of hours today searching the web for something close to a direct fit. Unfortunately, they don't sell much in the way of 60mm ducting/hoses in the States. The only 60mm stuff I found is in the UK.
60mm 2 3 8 ALUMINIUM DUCTING ALIDCT60
The factory system uses a tube that matches the ID and OD of the blower ducting. Then a sleeve slips over both the blower duct and connecting tube to join them.
I guess I could use some 2-1/2 duct material and squish it down with a big hose clamp. Not ideal as many of the ducts sold are made with reinforced wire and might have a problem sealing.
Oh well, If anyone has a parts GT and feels like pulling the instrument panel to get to these blower tubes that would sure make my life easier.
If anyone who has been down this path can remember exactly what they used and can point me in the right direction, I would appreciate it.