Thanx for tha replies..
As far as needing 1/2" tubing for a 1/2" barb.. i was thinking that the tubing and barb both being 1/2" would mean tha tube would fit too loose.. i guess not though comsidering it is a "barb" meaning it is at one point over 1/2"...
I got tha tube.. and Petras is out of a whole lot of stuff.. I couldn't buy from them.. but I did find a cheaper dealer.