Fun. Building models is synonymous with fun, or rather, it should be. Many times we forget this when we begin a new project. We have to burden ourselves with references, worry about accurate decal locations, etc. This can sometimes cause us certain stress.
To avoid this, I take 'holidays' from time to time and build a model where I can decide with total freedom what I want to do and how to do it.
When Caterham launched its JPE for sale, a model with extensive competition characteristics. It wasn't in my dreams that Tamiya would manufacture it, in scale years later. Later, when Tamiya first released its Caterham, I built four one after another, two for me and two for a friend of mine. It was not very fun.
Recently an idea came to me, build a model Caterham like the full-size one I wanted to have .. a JPE.
I chose a cycle fender model (Tamiya's item 10202), and I painted it Camel yellow (yes!....I painted the aluminum panels!!!!!), to complete my dream I used the Lotus 99 1/20 scale decals.
Other details of my custom Caterham are.
Follow my advice, from time to time break the rules and build your own "custom", and have a good time as I did ...... and I still do. [Editor's note: I took Mario's advice and did my own Caterham too - RNP]