I have been getting the same experience lately....... can't get good info from them either. I was told the difference in the 14- and the 15+ kits were where the hoses attach, and maybe one having a right angle fitting different. I was also told the catch bulb/can wasn't mounted, but yet just hanging by the hoses.
Since one can't view the PDF files of the install instructions right now, it's kinda like buying it blind with being able to compare and see details...... Therefore why I asked for input from others that might be using it.
Thanks for your feedback!