This was one of my personal challenges some years ago. I was trying to get clean surfaces and deliver the edges to be solved with BlendSrf only, some of them works just fine, others not so much but it was usefull to learn and practice anyway.
Nowadays I m focusing on model a Camaro z28 2015, working with single span surfaces and more practising with rebuild and matchsrf and then, hopely, record a tutorial.
Some renders made in keyshot recently:
The references I used were some random pictures of the web and photos of my Transformers Toy Sideswipe, there are some errors in the final result but if anyone is interested, this is the blueprint than I made: