I've looked through the tech docs and searched pages but cant find anything

Question is, how can i make my own shift mod with a switch instead of paying $80 on eBay?

http://www.fordmods.com/forums/viewforum.php?f=38

Thanks mate, i just cancelled an order for a shift kit after reading that diagram, saves me $$$ !!

I couldnt find the right tech docs cause i was looking at the the tech docs at the top of the page