I have decided on a powerstroke for the simple fact of avalibility.
I am looking at crew cabs Dodge just starting making them and chevy 4 doors are few and far between.

Also after test driving about ten trucks I decided to sell something so I can afford atleast a 1999. 1997 are slow compared to the 1999. I bet those 1999 powerstrokes , with the chip, are faster then alot of cars.

I read some about the sca additives. I think if I buy a truck with high miles 200,000 my best bet would be to switch to waterless coolant then I shall have no worries.