3D-printable BMW 3 Series GT-style exterior shell designed for HO scale (1:87) dioramas and model rail layouts. This print-ready shell features open window apertures, wheel arch clearance, sunroof opening and shark-fin antenna stub. Neutralized exterior only — wheels, chassis and interior parts are not included. Model is optimized for kitbashing, conversions and display use. Recommended print settings: 0.1–0.2 mm layer height, lightweight supports for overhangs. Print in PLA or resin for best detail, and test-fit to your chosen chassis or wheelsets; minor trimming may be required.