Just doing some reading, here's what I see:
- P74, so LX.
- Dual exhaust
- 3.27 axle code (Z5)
- Smaller (11.25" I guess) torque converter

This would seem to indicate the HPP model, though if I'm reading correctly HPP wasn't offered as a package in 2005, only as an LX Sport. This car doesn't have the rest of the LX Sport stuff like the floor shifter/console.

I'll upload some pics after I figure out how it works on this site.