DCC in a Split-Chassis

I recently picked up a Bachmann Spectrum SD45 in Erie Lackawanna paint for $25, With one problem, It doesn’t have DCC (It’s a 90s model so no surprise), How would i go about DCCing that?

I don’t have a soldering station, but I am curious: what scale?

HO Scale. There’s 2 different frrames, 1 on each side with a separate polarity

Maybe this can help

https://drupal.tcsdcc.com/installation/ho-scale/666

Simon