yes, you should replace timing chain and water pump while the top of the motor is stripped down.

my timing chain was shot at 125K with a ton of slack. timing chains don't usually break, and won't usually slip till 300K or so, but when they get a lot of slack it throws the timing out. also, my front seal was leaking.

my water pump was about $65-70. simple cloyes timing set was about $40. you'll need to borrow/rent a harmonic balance puller. set it up for the puller to push on the crank bolt, not the precious threads.

https://dodgeforum.com/forum/2nd-gen...ater-pump.html

 

Kaboom more than once....

 

You might want to include O2 sensors too.

I only have 1 upstream of cat and 1 downstream.

I'm hitting up the Denso ones.

 

I got NTK o2s. A lot cheaper. At least around me.

 

cheapest O2's I found were on Amazon and I think a little under $30 . Just bought some Denso O2's for my TA @ $26.00 each.

 

I got mine at advance auto. NTKs are $30-$50 and Densos are $50-$75.