The plates to hold the top down were made from steel angle.
The top bracket I think started as 3/4" inch angle, and I bent it to an acute angle. It's got three holes for self-tapping screws to attach it to the window frame, and two holes tapped 1/4-20 for the bottom bracket screws to go into.
The bottom bracket started life I think as 2" angle. The top leg was cut a bit narrower to match the top bracket and the bottom leg was bent a bit so it could follow the angle of the windshield frame and also have the top leg parallel to the leg on the top bracket. It is attached to the windshield frame with two self-tapping sheet metal screws, either #10 or 1/4", can't remember right now.
I used to sets of these, each one about 1 foot from the side of the windshield frame.
I can get you dimensions and/or a drawing late next week if you'd like more information than what's above. You can check the photo on the hardtop page of my site (link in my signature) and see the photo of the brackets, maybe with this explanation and the photo that's all you'll need.
Having done this project I have to say it worked out much better than the stock "screws up through the windshield frame" method. It's much less awkward to attach, and you can apply a lot more clamping force to pull the top down onto the windshield frame.
The electric lock in the rear door is a standard electric lock solenoid, I think I got it at a surplus place for less than five bucks. I know JC Whitney sells them. Pretty simple to install. Then I ran wiring to the dash and I got a small electric window switch from AtuoZone or somewhere and for now it is mounted in a small plastic under-dash switch panel. I also put a door jamb wiring loom in between the door and the frame so the wires are concealed in a plastic tube at when the door is open.
Here's the loom I used:
http://www.julianos.com/door_jamb_wire_looms.html
The lock actuator is like the one in the link below, altough I found one in a surplus place for maybe 5 bucks. Can't remember the surplus place, it is online, if I can remember I'll let you know:
http://cgi.ebay.com/Power-Door-Actu...ryZ14932QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Lock actuator is very easy to install and screws to the inside of the inner door panel. Actuating rod attaches to rod from the door lock lever to the lock mechanism. Very easy and very handy to have!