here is a little info on what it looks like aftermarket
https://epasperformance.com/
https://www.carthrottle.com/post/ele...-does-it-work/
https://carbiketech.com/epas/
and finally, flaming river's got a kit and there is a video of how it works.
https://www.flamingriver.com/fr40200...power-steering
I would think an epas could easily be made to work on the task force truck if you put your mind to it.