I've been shopping around for a timing belt kit. There seems to be two types for a 98 S70. One is for engine numbers up to 1266127 and has an auto tensioner and with out direct ignition, one coil per vehicle. The other is for 1266128 and up, listed as having a mechanical tensioner and direct ignition. My delima is that my engine number 1268114 has one coil per vehicle. This listing is on several web sites so I don't think it's a mis-print. Any clues out there?

 

Then you might have the Hydrolic tensioner(auto).

But it will be easy to find out. Remove the timing cover and look and see what one you have. The Auto looks like a long cylinder.
The mechanical has tabs to line up to set the tension.