Which aluminum rockers to buy

I bought a set from Mancini. They are made by Harland Sharp for Mancini. 1.6 ratio for my 493 in the Charger.
Problem is, they came with NO INSTRUCTIONS. The kit has all sorts of shims and spacers of different widths. The pushrod length checking tool also had NO INSTRUCTIONS. It also has no numbers on it for a length reference.
I talked to the guys at Mancini. He agreed that there should at least be some basic instructions and he was going to speak with the management about it.