With the introduction of the 1:36 series in February 2008, the 1:30 series was renamed 1:28--because that's their actual scale.

There currently two versions of the 1:28 drawings: the originals, introduced in 2000, and a new-in-2005 series of more detailed drawings.  Originally intended to become a specialized, highly detailed series, the 1:28 drawings have since been replaced in that role by the 1:36 drawings.

Drawings with an asterisk * indicate right-side view drawings.

- New Series -

GP40
*GP40M-3, GP40X rebuild, GNWR slug mother (SLR #3806 version)

- Old Series -

GP38
GP38, dynamic brakes
GP38, no dynamic brakes

GP38-2, Phase 1, dynamic brakes, 3200-gallon fuel tank
GP38-2, Phase 1, dynamic brakes, 2400-gallon fuel tank
GP38-2, Phase 1, dynamic brakes, 3200-gallon fuel tank, M-type Blombergs
GP38-2, Phase 1, dynamic brakes, 2400-gallon fuel tank, M-type Blombergs
GP38-2, Phase 1, no dynamic brakes, 3200-gallon fuel tank
GP38-2, Phase 1, no dynamic brakes, 2400-gallon fuel tank
GP38-2, Phase 1, no dynamic brakes, 3200-gallon fuel tank, M-type Blombergs
GP38-2, Phase 1, no dynamic brakes, 2400-gallon fuel tank, M-type Blombergs

GP38-2, Phase 2, dynamic brakes, 3200-gallon fuel tank, M-type Blombergs
GP38-2, Phase 2, no dynamic brakes, 3200-gallon fuel tank, M-type Blombergs

GP40
GP40, dynamic brakes, 3600-gallon fuel tank
GP40, dynamic brakes, 2400-gallon fuel tank
GP40, no dynamic brakes, 3600-gallon fuel tank
GP40, no dynamic brakes, 2400-gallon fuel tank

GP40-2, Phase 1, dynamic brakes
GP40-2, Phase 1, dynamic brakes, M-type Blombergs
GP40-2, Phase 1, no dynamic brakes
GP40-2, Phase 1, no dynamic brakes, M-type Blombergs

GP40-2, Phase 2, dynamic brakes, M-type Blombergs
GP40-2, Phase 2, no dynamic brakyes, M-type Blombergs

Michael Eby 2008