Reply to "Hall Caliper Kit..."

Thanks for the responses! A simple rebuild of the original calipers was the route I wanted to go. My friend just "ponyed up" the $$$ and got the Hall kit before we discussed it. The Hall kit consists of 4 rebuilt Girlings and 4 SS lines and some misc fittings. It's not the kit with the Chevy calipers. The car has the original booster/master.
I got a response from Hall on the advantage of his modification over the stock hard lines. Here's what they sent: "We have rebuilt over 1000 front and rear calipers. The stock brakes on the Pantera will stop from 60 m.p.h. in 140 feet. The modified calipers will stop you in 122 feet from 60 m.p.h., as you can see 18 feet is a lot better."
If this is the case, I'm Ok with it. I just don't like to use things that looked "cobbled" together, especially on brakes. It's all and good to go fast, but I want to be able to STOP faster... I made sure the new SS lines cleared everything before putting them in service.
As for the proportioning valve. I want to replace it with a "T". Any suggestions on where to get a proper one? Just get an autoparts store variety one? Or maybe an aftermarket valve? When I put it in I hope the pedal travel isn't quite as far as it is now. The car stops excellent, just have a long push on the pedal to get it... Prefer not to get a new master booster if I can help it too.
Thanks Again for the input.
Sean
BTW: Calipers are on the correct sides, bleeder on top... Otherwise we'd need to flip the car over to get them bled correctly... :^)