[Richard]

The install was relatively straight forward once I figured out what fittings I needed and ordered them.

All the fittings on the old valve are 1/4 NPT to push on. The two supply lines are 1/2 DOT tubing, one of the delivery lines is 1/2 DOT, one is 3/8, the ABS line is 3/8, and the two lines to the gauges on the dash are 1/4. Yeah, that's why I had to draw a picture and detail the needed fittings.

I simply used push on butt connectors to splice the lines. Now that I know the pedal is a permanent addition, I will replace with compression fittings. I didn't have any qualms about splicing or using push on connections since the air lines were originally connected at both ends with push ons. Yes I added one more place to potentially leak, but in my mind I didn't alter the safety element by adding a splice.

I will take some pics later today of the install, and post.

Because the treadle sits higher than the accelerator, the place where my foot finds it is VERY close to the contact point of the old pedal.

Russ, you and I are of similar builds, so I can see why we have had the same impression of the force required. Play with the trig and force vectors for an A Ha ! moment.

Here are the pics.

   
In this pic, the two lines on the lower left are the supply lines from primary and secondary circuits. On the top, the rear brass Christmas tree feeds the primary delivery, the ABS circuit (red), and the brake switch light. The two lines on the right side are connected to the dash brake pressure gauge. There are two additional ports on the bottom of the valve plugged with hex pipe plugs.

I did have the Christmas tree standing straight up from the valve, but it slightly interfered with the pedal when fully depressed. 

   

There are different ways that you could plumb this since there are two supply openings and two delivery openings in both the primary and secondary circuits. To connect to the Newell setup, the primary and secondary supply is easy. I used the other supply ports for the gauge. The delivery ports are a little more work. The primary delivery has to feed the primary delivery, the brake light switch, and the ABS circuit so you have to go from one outlet to three in some fashion. The valve can be rotated in the assembly, to allow access to the two ports underneath, BUT it you screw fittings in the ports with the valve rotated it will not lie flat on the floor.