Proportioning Valves and brake lines

Need some recommendations on a proportioning valve for my 95 150 build. This will be strictly a drag truck and will be disc front and rear. It looks like 3 basic types. fixed f/r and adjustable f/r and single

Fixed;
http://www.summitracing.com/parts/tff-2302nb/overview/

Adjustable;
http://www.summitracing.com/parts/sum-g3910/overview/

Single;
http://www.summitracing.com/parts/sum-g3905/overview/

Also, what size brake lines should I run? I believe the stock ones were 3/16 (or the metric equiv.).

That single should do fine.
 3/16 is fine for the line

I'd do an adjustable one if your replacing the factory part.

When your running slicks at the track you can run a ton more bias to the rear brakes. The adjustable ones are nice for that.

i used the wilwood on the front line. some good info.... http://www.markwilliams.com/braketech.aspx

That is some good info, thank you! Here everything I was reading was telling me to put the portioning valve on the rear line but with the skinny fronts, it makes sense to put more bias to the rear.

I put mine on the rear brake line, and mounted it to the left of the drivers seat with the adjustment knob coming through the floor. I can adjust it on the fly.

i just went by this.....
http://www.swracecars.com/Files/SW-Race-Cars-Vol-31-Pg49.pdf