Here's a '49 GMC with a Jag IFS and IRS (getting metal work done)
A photo of the IFS - bolted in using Jag rubber mounts
Another photo of the IFS- no springs, bags coming and it sitting on a piece of all-thread at factory Jag XJ6 ride height
And if you're confused between IFS and IRS, here's a Jag IRS in that same truck-
Probably going to not use the Jag sheetmetal cage and will suspend the IRS center section directly between the frame sides. 3.54 with limited slip, inboard brakes. IRS is on trailing arms with bags (but not yet) On all-thread at the stock Jag height. Should be a couple inches off the ground with the bags aired out. No c-notch. Wheels clear bed sides, so I'm not planning a tub, but the tires are line on line with the fender lip, so I need to start planning on how to widen the fenders.
Just for fun here's the 58? Caddy Eldorado steering wheel. Floor is still a little rough - starting to fab firewall doghouse and trans cover
Phil