I have a two-day-old-to-me 1999 RAM 2500 QC Cummins TD SLT Laramie. Nice leather, (plastic)wood trim, and that wonderful diesel sound...how I have missed that...

Anyway, I have a tweeter in the A pillars, but no steering wheel controls. Do I have the Infinity system? What size speakers do I have in the doors? Where is the amp?

I am unimpressed with the sound of the system.

Thanks in advance?