I no longer build my own at this time, but I have done many builds.

I liked the design phase, when you are creating the overall project....deciding on and assembling the performance parts. This isn't fun for me unless there is some serious "tire frying", and proving a point to rivals. Obviously, I like the visual parts.....mockup, choosing components, modifications to the body, and of course paint. Now I consider myself fortunate to be able to do my "favorite part" for a living.

Things I detested: The mundane routing of lines and wiring, "Ho-hum" rebuilding of brakes, repairing old damage, figuring out linkages, attending to all of the 'necessaries" that have to be there, but don't have a lot to do with straightline performance, or appearance.