All reading way too much into this! Welded diff or open diff... if the car will roll, it'll go no matter what diff is in it.
Onl thing that'll make the car roll unless your a right idiot behind the wheel is go sideways over a bump and the outside wheels dig in upon landing or if your drifting with a decent bit of speed across ruts or deep tracks and hit them at a bad angle.
A 316 or any rwd car at all with a welded diff will be sweet in the field, lots of power will only frustrate you more than anything as you'll only be spinning the wheels non stop no matter what gear your in or whatever you do with your right foot unless you'd mud tyres fitted
An open diff will work no problem too once you keep your speed up and use the momentum to keep you going. As you go abit slower, the inside wheel will just spin away with you going nowhere or just spinning out though.
I'd say just get the cheapest sh!tbox you can find with just a good engine and clutch. Have abit or craic in it and then weld the diff and have even more fun in it.
Steel wheels are better too as a lot of cars, the alloys crack in a field if its rough. I have a Volvo 760 that was great craic in the summer when grass was cut off the fields but sh!tty soft alloys kept letting out air on it.
Would love to get a few 325 or 525tds shitters and run them on green for the fields
