Hi, Kalrup!
First of all, let me say you have a great gallery here and I am very impressed with your Huey. Would you be interested in a barter? I can offer you in return a Nissan 300zx. Detailed interior and undercarriage as well. 2nd model an M2 Browning. Highly detailed fully textured, ready for rigging or rendering. 3rd P 51 mustang. This one is only modeled and a bit older. Highly detailed but could need some love as I modeled that like 5 years ago and my skills weren't the best back then. Still better than doing it from scratch.
All models were made in Maya and the first 2 are set up with V-Ray. Can send them to you in vrays file format should you use it too. If not obj or fbx are an option, just you will have to set up textures and shaders in that case.
Look forward to your reply.
Have a great day!