[Berg]

On a sad note, I cannot find a kit for the 55-59 cabs to make it a less complicated swap however there is a guy on another forum I saw a while back who used a Trailblazer SS with a 6.0 LS engine and I believe it was airbagged with AWD. It put out a good amount of power and he used spare wheels off a Dodge pickup that were like 18" or 20" diameter with a set of center caps he found for it. For the life of me I can't find it but he went through a lot of the same stuff you'd be in for. I vote for a 2500 platform but you'd probably have to shorten the frame up a good amount and move the axle where you wanted it but I couldn't see why you couldn't use the stock spring perches and re fasten them to the frame and get the driveshaft shortened. I know in most swaps the LS engines seem to sit a lot closer to the firewall so that is something else to take into consideration.