Intricate Sprinter 3D Model

I need a print-ready, 1:43 scale (roughly 15 cm long) Mercedes-Benz Sprinter mini model that doubles as a corporate desk gift. The vehicle itself should match the high-resolution look of the 360° reference here: https://htafiyat.mercedes-benz.com.tr/model/sprinter-okul/360-derece-gorunum, so every grille line, window frame and light cluster must read crisply once printed.

Along the roofline and cargo area I want a clever dual-purpose insert that serves as both a card holder and a pen box—nothing bulky, just a seamless extension of the van’s geometry that keeps the overall silhouette recognizable. Please reserve two branding zones:
• a shallow surface where my logo can be engraved directly into the body, and
• a flat recess sized for a small adhesive sticker so we can swap graphics for different clients.

Deliverables (all in metric units):
• Clean, manifold STL files ready for FDM or SLA printing; main body split if needed for easy support removal.
• Original editable source (STEP or similar) so we can adjust branding in the future.
• Simple assembly or print guide noting recommended orientations, tolerances and any snap-fit joints for the card/pen compartment lids.

When finished I should be able to print the model at 15 cm, slide in business cards and pens, and apply or engrave branding without additional rework.