The short answer is no.
earlycj5.com
Has the answers you need.
It would serve you well to readup on your motor there.
It evolved into the 231 which I believe had 350 buick pistons.
Then it became a even fire motor around 77.
which would be about when your turbo idea could be done... But..
turbos make power or torque higher in the rpm band than is needed for a jeep.
A commando in general is more like a tractor, all grunt.
And the 225 you have is perfect for this, perfect.
Compare your motors torque # with any other jeep motor then compare the motor wieght, you will be suprised.
The Chevy 4.3 v6 vortec is a small block with 2 cylinders missing.
Which may be what your Dad is refering to.
The 225 was a really good choice for a jeep light and powerful, also short.
It runs cooler and it has that heavy flywheel.
Yes they seem odd, fuel injection is hard to adapt, and the 4 bbl dosent get you much where you need it.
A mild cam , hei from a newer 231 oodfire,and a good rebuild will be best.
This is not suposed to be a hotrod.
But with dual exaughst it sounds like one.
But if you want to impress your buds in the woods this is a great rig.
We live in a world of bigger is better, and HP #'s rule.
But a real Hotrodder know's Torque rules.
I had a 68 Camaro with a built 455 old bigblock in it.
It was done after 4500 rpm and I dont know what the horsepower was but it had more torque than you could belive I could chirp the tires next to a mustage on the freeway at 75 mph.
It didnt matter how fast it could go it sounded, felt and looked like it could beat anybody.
On the street torque rules.
And in the woods or out in a field, and in the rocks.
Mud and the race track rpm rules.
I am sure someone can take something I have said and find fault but this is in general how it works.
IMHO