Rear AC Block Off Question

[Johnny Racer]

I was wondering what size are the fittings and o-rings for the rear lines to block off the AC to the rear of a 1998 Tahoe?

Reason I ask is cause I am not thinking the fittings are worth $50 + and I might be able to grab something here at work that should do the same thing. Theres nothing special about those fittings is there?

 

[Tricky]

I used something similar to these but they are needed to hold presure back and good fit. If you have something just as good then you are good, but i have had mine blocked for two years now but plan on changing rear lines with rubber ones over the winter. A buddy in Tenn said there is a place where he got his for $150.

http://www.streetrodguys.com/compon...ategory_id,45/option,com_virtuemart/Itemid,1/