I love Nexxspeed products. Extremely well machined, with excellent tolerances, and at a great price.
One thing I will add. The Nexxspeed Hop Unit for the AAP-01/C DOES come with the Hard V Nub as standard, so you don't need to buy one.
There are a few videos on YouTube with the Hop Unit being fitted. All these videos have the foam insert on the nub. According to my Hop Unit at least, this is no longer the case, as you will be able to see from the video I released fitting all the Nexxsped parts I ordered.