Kimber's will be listed by their gun type. CDP, TLE, Carry, Custom, Classic...
The description will also let you know if the gun is Stainless.
RL = Rail
Ultra = 3"
Pro = 4"
Nothing before the model type = 5"
If you want a 3" for CC, then you are looking for any of the models with the word Ultra in them. Like Ultra Carry or Ultra CDP II.
The differences in the CDP and Carry are...CDP has:
night sights Std.
checkered front strap
aluminum alloy frame (lighter by 5 oz.)
styled wood grips
all beveled edges
Cost...well, the CDP's are now going for $1100. I got mine last year, lightly used, for $850. The Ultra Carry can still be had for $750 NIB and Gunbroker has several used in the $600 range.