Quote Originally Posted by BillBoost37 View Post
On the trans, you can swap an HD into a non-hd. Keep in mind that the passenger axle is shorter on the HD and the gear ratio should be corrected in the pcm.
Could you elaborate on this?

Secondly. I have a scanner, but I doubt this sort of tuning can be done with mine so would I need to take the car into a shop to have the gear ratio corrected in the pcm? If thats the case, would I be able to drive the car without any issue to the shop?