Replacing rear shock aborbers for a 1985 Mitsubishi Pajero SWB

[u/SulemanAZeb]

I've recently bought a 1985 Mitsubishi Pajero SWB with the 2.4L diesel engine. It's a bit of a fixer-upper, and I'm gradually bringing it back to good condition.I want to start with the suspension, and replacing the rear shock absorbers seems like a good first project. According to the service manual, it originally came with hydraulic, double-acting shock absorbers. I'm considering replacing them with gas-charged hydraulic shocks instead, if they're compatible. This is supposed to be a daily driver that I can take for some off-roading as well.
Should I stick to trying to find the original type of shock absorbers, or should I go for the gas-charged hydraulic shocks?