So from everything I gather on this forum it seems useless to change a timing chain if the other parts touching the chain are not also changed. Is it something that can be done in an afternoon without too much chance of messing something up or should I just forget about the timing chain and hope my 300d makes it to 300k miles before it breaks?

I'm assuming if I do change the chain I should change also:
the cam sprocket
The tensioner
all guide rails for the chain

I've already updated the vacuum pump of course.

I guess I could just drive it till it breaks and when it does, consider it time to replace my #14 head. But... it's always easier to do Preventative Maintenence. That's why I ask if it's possible/worth doing. Any words of wisdom here?

__________________
-E300d '99 350k
-Suburban '93 220k
-TDI Jetta '03 350k
Sold
-F250 '96 7.3
-Dodge Ram 12V
-E320 '95 200k
-E320 Wagon 1994 155k
-300d Turbo '87 187k miles
-E320 1994 200k
-300d Turbo '84 245k (sold to Dan62)
-300d Turbo '84 180k
-300sd '80 300k
-7.3 Powerstroke Diesel 15P Van 500k+ miles
-190d '89 Non Turbo 2.5 5cyl 240k (my first MB)
Tom's Imports of Columbia MO Ruined the IP in changing leaky delivery valve O-Rings - Refused to stand behind his work. Mid-MO MB drivers-AVOID Tom's.