Solenoid Shifters

[FireSale]

Maybe if it's original parts on the trans. Here's the section from the 2016 rule book.

"Any gear change must occur as a result of an internal function of the
transmission or from direct action by the driver. (deleted stuff about converters)
Electronic rpm controls for the electric (internal or external to the
transmission) shifting of automatic transmissions permitted in
computer-controlled vehicles only. Otherwise, any gear change must
occur as a result of an internal function of the transmission or from
direct action by the driver. Pneumatic, hydraulic, electric, etc.
controls and shifters in all noncomputer-controlled electronic-fuel injected vehicles prohibited."

Note the Internal function of the trans part.

Dale