np 231 chains

getting ready to rebuild my np 231 i see you can buy a 1 inch or a 1 3/8 wide chain.both with 31 links.will either fit in it ? obviously 1 3/8 would be a stronger chain. do you need different cogs widths to run the wider chain?:worship:

Yes, the gear must match the chain or vise versa

kk thanks for fast reply sorta figured it would be that way.whats usually in a 89 xj?