single and dble convulated air bag qeustion

what is better,I have a problem with a bag made by universal air,it kept bowing out when deflated now they won,t warrenty it saying dbles are for the rear and singles are for the front,it,s on a 78 chev truck.Now I will buy some slams,any good dealers here in the west in Canada thanks

Slams are a great deal at all prices. I don't know of any in western Canada, but check out www.airassisted.com out of Toronto. Slam RE6's are $120 canadian.