You will need to trim this hose to finish length once everything is set up, but for now just let it dangle under the bike.
Now since I'm going to modify the stock ventilator air cleaner because I can't use the stock breather bolts, I need a means to support the throttle body between the cylinder heads. Kuryakyn makes this part too, it's called a carburetor support bracket but it is identical to the HD induction module support bracket pn 27712-08 used on non-CVO air cleaners with plastic housings. The Kuryakyn pn is 9929 and comes in chrome of course!
Test fit the bracket to make sure everything is in alignment before tightening any bolts. The bracket comes with 1/4" socket head mounting screws. I had to take my die grinder and remove some metal in way of the breather bolts, likely due to having an HPI TB instead of stock, but it otherwise fit perfectly. Make sure the bracket is flat against the cylinder head, then install the banjo fittings and breather bolts with aluminum washers. The washers go on either side of the banjo fitting. Once installed it should look like the photo below.