Hello dear sir,
looking at the images and understanding what your objective is, I can offer my services, it is a job with more details than you estimate, besides making some basic changes to the shape (according to your tastes and ideas), there is the concept if the main frame, what material will be used and how to make the sections and join them together.
the other mechanical details such as brakes, suspension, other details should be defined if it is part of the scope of the design.
I invite you to see my profile, and with pleasure we can discuss details, scope, time and value of the project.
Thank you for reading my offer.