That would work pretty easy right ??
The VR/VS has a wider track, hence a wider diff than the VN/VP's.Ive seen a VN diff in a VS and it looks stupid,way too narrow,especially with standard 15 inch rims fitted.The VN/VP diffs will bolt up ok,and probably vice versa,but as i said,they are about an inch narrower than the VR/VS ones.
What would you recommend for my 5 spd VN thats currently getting worked
Id get a VN/VP LSD thats been rebuilt/reconditioned..Being a 5 speed you might even want to get some lower diff gears fitted for better take off/pickup.
Also you might wanna look into getting the diff centres swapped over if you already have the VS LSD,like put the VS LSD centre into the VN diff housing.They should just be a straight swap.