Either way, it is now a word and will certainly take root as one here.
Conversioneer - One who converts. A conversion of their factory induction, ignition or exhaust components, either singularly or together, for the enhancement of engine performance, reliability, economy, and overall enjoyment and satisfaction in drivability.
"I have replaced the four original carburetor's with only one that uses a intake manifold successfully and am now a Conversioneer!"
Conversioneering - The application of scientific, economic, social and practical knowledge in order to invent, design, build, maintain, research, and improve structures, machines, devices, systems, materials and processes associated with motorcycle transportation, racing or even wishful thinking.
"I would like to study the art and science of Conversioneering to successfully replace my ignition system"
Conversioneering is a broad discipline with a range of more specialized fields, each with a more specific emphasis on particular areas of the motorcycle and its application of induction, ignition, exhaust and more.
The term "Conversioneer" is now coined for any pocket.