Modern suspension - discussion

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Anyone built a 70-72 blazer with one of the aftermarket blazer chassis and suspension?
How was the result?

I'm thinking about a maybe building another truck. This time I'm thinking about changing the suspension to something modern with better handling for dynamic driving. Probably a modern engine and transmission.

Looking for inputs and thoughts on the topic, suspension is probably what I'm least skilled at.

I'm not really into off-roading, nor do I particularly care for lowering nor lifting the truck. I had a truck with air bags but I really didn't like it (I got a leak in a line after a few years and it was a pain in the neck to fix).

Thoughts anyone? Anything ready made out there? I saw Scott's hot rod shop offers chassis with suspension (but a bit expensive)....