Thanks Rick_L and Slim, I am not looking at the CPP stock control arms, but rather, their tubular control arms and Slim, I don't want look alike heidts, but components that are well made and heidts 2" drop spindles are well known. I have eliminated the ECI kit. Right now I am looking at CPP's complete package: tubular control arms, 2" drop spindles, 11 or 12 inch rotors and large GM calipers with brackets( maybe look alike heidts, but from CPP instead of ebay ) , unless there is another vender that has a complete package like the one I mentioned. Thanks for your input. Its appreciated.
The ECI kit is a good kit...not sure why you eliminated it. If you want 13" brakes, it's a very good option.
Now, having said that, the 12" kit from CPP is, IMO, the best bang for the buck, if it's still available It's a tad over $400 for drop spindles and much better brakes. It uses 2" drop spindles and 1988-1992 F-body 1LE brakes (D52 calipers/pads, 11.8" rotors, and stock bearings/races...actually, everything can be replaced at the local hardware store) and they will fit under 15" Rally wheels btw.
It will push your wheels out 5/8" per side though...on a lowered car that
could be a problem, but if you're not slamming it in the weeds, it might be just fine. I ran mine with 15x8's up front with coil overs...no problem, but I did have to raise the coil-overs an inch or so to keep my tires from rubber on my fenders at full lock. If you buy that kit, I'd replace the pads it comes with with something better (better being even a cheap $30 set of pads from a local parts store)...I had problems with them pulling on one side. Changed the pads out with some cheap Advanced Auto semi-metallics and everything was fine. Those brakes were better than the 12.2" Wilwoods (on Heidt's spindles I replaced them with btw).
You should be able to use that kit (spindles etc) with CPP's control arms (tubular or stock style). In fact, when I had the 12" CPP kit on my car, I used it with Heidts uppers/lowers and then with Global West uppers/lowers too when I switched to coil-overs.
CPP does offer a set of 2" drop spindles that work with C5/6 Corvette hubs/calipers/rotors.
C5 Spindles I'm not sure if they're actually available though. If they are and you are willing to run 17"+ wheels, that's the way to go. You can source all the C5/6 stuff locally or on ebay and you'll have some kick ass brakes. I have C6 stuff on my '56 now and the stopping power is phenomenal.
Just a word to the wise...I wouldn't buy a "package" from any vendor, especially CPP. You'll be better off listening to the advice from members on this forum. CPP has had some big problems with some of their products in the past and most of us have been there, done that.
Whatever control you use, I would add the Howe tall ball joints to the uppers. It'll be worth the money. There's a thread pinned at the top of this forum abut them. Here's the link:
Howe Tall Ball Joints