Here is the frame work the motor sits in behind the dash.
Found the picture of my 'CAD' layout of the possible wiper pivot points and arm lengths verses blade length testing. Drew up one side of the split screen glass area, not including the rubber gasket, to see the influences of each different setup. Can work out degrees of sweep this way too. Then see what best fits the situation and what is available.
This is the donor Jeep ducting that goes from the centre of the A/C unit to the side of the dash by the door. The ducting does not fit under my sloping cowl however so can't use it as is.
Spent an afternoon at the local pick-a-part yard to find suitable tubing and fittings etc for the vents system. Not much available now a days as most cars have it in moulded in under the dash. Most of this was from older Ranger Rovers and Mercedes cars from the 70-80's
I cut the end off the Jeep ducting that holds the grille part in in place. The shape was going to be hard to join round ducting too.
So using a heat gun over one of my T stakes, I reshaped it. Once it got soft I pushed the folds flatter with some flat steel.
Used one of the elbows from a Mercedes and cut most of the square end off so it would fit inside.
It was a bit bigger in diameter, so cut a wedge out to reduce its circumference.
Put a hose clamp around it once it was in the right position.
Then using a soldering iron welded the seam back up. Been a while since I had welded some plastic as used to do a bit now and again back in the 80's before Youtube was around to show you how!
Welded all the way around and even inside to make a good strong connection. I used a 80 watt soldering iron as was thick, but normally only use a 40 watt one. Don't want it too hot as leaves it brittle when it starts smoking a lot. Always have a fan going as the fumes are toxic.
This gives you an idea of where it sits when screwed in the end of the dash.
Got both sides done now and will use the original ducting from the Mercedes as well which was a bit over 66mm-2.5".
It will hook around in front of the defrost vent and go to the front most outlets at the top of the A/C unit.