It's physically impossible for an SD with a 617 to achieve 9.55 seconds in a 0-60 run.

You'd need to have about 165hp or so.......more than a 603........and there is NFW you have it.

I recently ran the SD with a G-Tech Pro and achieved 12.7 seconds in a 0-60 run......and that's a decent time for an SD.

The SDL's run about 10.75 seconds.........or so.

A 603 with an intercooler and the fuel turned all the way up can dip down to about 8.5 seconds or so. This engine has an output of 200 hp.