Panel and suburban frames are very close to pick ups. On TF they use the same frame with an extension at rear. Maybe a long bed kit would fit a suburban.
Panel and suburban frames should be the same.
Make sure you know what "cat back" means and what "cross member back" means. I see almost $1000 for those...WOW! Is this a show truck? They show pic as duals?
I advise not to buy mail order. From anyone! You will also find out that stainless is a huge pain. Most shops don't do it. Most welds look bad and not polished. No one has a perfect kit. All made to order. They will not know anything about 53 suburbans. Some grades of SS will rust. You can buy pieces at Summit and such and have a GOOD tig welder weld it up. All in all, better to go to a good shop and get a steel custom system. Talk to ALL the muffler shops and custom car shops in your area to see what the consensus is on SS. The search I did here on Stovebolt shows a lot of bad JUJU.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn