After puting new lifters or cam followers, I checked the timing chain. It was at least 5 degrees. New chain time I guess

What brand of chain should I order?
What special tools are needed?
How do I replace the chain

Any input would be helpful thanks

__________________
Dave

1985 190D 2.2 auto--gone
1975 240D 4-speed--storage
1985 500SEL--daily driver
1985 300TD--bad rust, soon to part out...
1982 300SD--waiting on engine from RD
1984 190E--storage
1996 Dodge 2500 Cummins--daily driver