Disk brake and drop kit conversion question

[SPRNTRCR2]

Hey folks, I am about to get started doing a disk brake conversion and dropping the stance on my 67 stepper with a 4/6 kit. I am looking at a kit from ece and a mcgaughys kit I found on ebay from a company with good reputable reviews. Problem is both seem to be same kits with all the same components other than there is a $300 difference in price in the 2. Can somebody give me some insight as to their knowledge and quality of the McGaughys kits. From reading several post on the forum I believe I would be getting good quality pieces from ECE on theirs but it's hard to ignore a $300 difference by going with the Mcgaughys kits.

As you can tell by my post count, I'm new to the forum and will be posting some pics of my old ride soon. (As soon as I can figure out how to post pics anyway

Thanks in advance!