Had some time Friday and Saturday to work on the van. Decided to forgo getting it running since my stepdad was around and could help with the window install. No way I could have completed it alone and it was good to have some support when you put a saw blade on the body.
Since the window I purchased was an open box I was missing 2 things.
1. Screws - No problem I went to the hardware store and picked up some hex headed self tapping screws.
2. Template - This one was a little more tricky, I made my own to one dimension but knew I would have to trim a little more in order for the window to sit down into the hole as there was a lip around that portion.

Laid it out inside and drilled through in 3 places to get it close on the outside. Then pulled out the jigsaw....

No turning back....

There's a hole in my van!

Testfit, trim, testfit, trim.....why didn't I spen an extra $300 for a template and screws????

Finally got the hole where I needed it, did I mention trimming the inner panels ended up being rough, used a grinder, not the best tool, but it worked and only coated everything with metal dust. As well as put a nice biscuit joint in my right pointer finger knuckle....thankfully it only hit skin, no ligaments or bone.
I then cleaned the outside cut with alcohol, smoothed the interior panel cut and coated all the cuts with some Eastwood rust stop.
Inside:

Outside:

Notice the lovely graphics glue catching the metal dust. I need to buy a graphics eraser and get busy on the entire van.
Caulked the window with some 100% Silicone:

Cleanup before we ran to my youngest's 4th birthday party.

(Kid's treehouse in the background, which is the reason I didn't get more of these projects done over that 1.5 weeks I had off. Kids love it 16x11 around a 150+ yr old oak.)
Hope to test for leaks tomorrow and get things lined up for the EPBV delete. Crossing my fingers I get that buttoned up so I can get the engine back together this weekend. I'm ready to drive this thing again!