Performance Calipers for hopped-up Pickups

[TruckSTR]

Hello, all! I have a question or three. I'm working on trying to upgrade the brakes on my project truck. As many of you probably already know, the '67 Chevy pickups came with 6-lug wheels and drum brakes. Not good for stopping in a hurry. So, I've changed over to 5-lug wheels (5 on 5 pattern) using Summit Racing rotors (http://store.summitracing.com/partde...2DDSEP%2D5516L ) and Early Classic 2-1/2" dropped disc brake spindles (http://www.earlyclassic.com/catalog.aspx). This setup will accept the stock '72 Chevy C10 pickup single piston brake calipers, but I want to get a bit more.

LowBuckX installed these same calipers in his '72 Nova (http://www.g-machines.com/forum/showthread.php?p=249220 - post #6). My question is are there some more performance oriented calipers that will bolt-in in place of the stock calipers?

I'd rather not switch over, yet, to a BAER or SSBC Force 10 set-up or?. Maybe later.

Are the Wilwood GMIII calipers a bolt-in in? Are they any good? I realize that both the stock AND GMIIIs are single piston calipers. But the GMIIIs are aluminum (therefore, maybe the only major benefit would be the better heat dissipation). Are the GMIIIs DOT approved?

Note: This pickup will not be used as a "truck". I'm building it to haul azz, not manure. :D

Thanks in advance!

Jeff
aka TruckSTR