CPP disc brake conversion and lowering kit quality

[JPfromTN]

I am looking at the CPP power disc brake conversion kit for a 70' C10 LWB, will do the 21/2" lower spindles along with 1" front and 4" rear lowering springs at the same time.

Looking for a good opinion on the quality and completeness of the CPP kit and if the are any other upgrades that should be made at the same time. (Doing power steering conversion this Winter)

Thanks in advance, great site has been a big help on answering all of my questions.