modern shocks

[updraught]

I believe the VW bug shocks fit, and especially the Koni ones work well.
Koni made a name for themselves with the Special D shocks on old classic type sports cars.
These usually have very little, to no, compression resistance, and adjustable rebound up to very hard.
On cars with heavy springs, they allow the springs to compress on a bump, and control the rebound, (or letting go) of the spring, to stop that jarring, and give you that Rolls Royce ride. when properly tuned.
Leaf springs have quite a bit of resistance built in, with friction between the leaves, unlike coil springs, and so shouldn't need much compression damping.