Nice...
A couple words of caution:
You ordered the aluminum water pump. Your car (68 barracuda) came with a cast iron pump and the lower radiator hose is on the opposite side, also any power steering brackets from the 68 set up bolt to the water pump which is not the same as the cast iron pump for power steering mounting...
also did you intend to order an alternator with a built in regulator? That's what you ordered, it's hard to catch, but you have to look down the list to find it.
Your car came with the "round back" alternator and a single field alternator. You ordered a square back alternator, if I remember correctly from my younger days, the square back will have an interference with the stock 68 small block mounting...
Just wanted to alert you in case you weren't aware of these issues...