Convert Spark Lever To Turn Signal Lever

[Lembomw]

I was going through several old Model A News - Technically Speaking articles and ran across one where a person added turn signals to his car and made his own components that converted the spark lever to control the turn indicators.
Has anyone has seen a kit that has been put out that will do this so that I do not have to make my own. I have seen the wiring harnesses available from the major vendors that have either a signal unit that attaches to the steering column or a toggle lever that can be attached under the dash to hide it, but none that have the components that will convert the spark lever to a turn signal lever. I have electronic ignition and do not need the spark lever for its original purpose anymore so would like to use it to control the turn signals rather than just sitting there doing nothing.
Thanks, Mark