FENDERWELL HEADERS/ FRONT RIM SIZE

---
Just wondering - is it possible to do some mods to the firewall in order to get the motor back enough to run a 26" tire? Might not be possible, not sure what is keeping the motor from going back an inch or 2.
would need A LOT of work on the firewall to push motor back, limiting factor in my car is the head oil drains, saying that can't see how pushing it back will give anymore tire clearance. check the photo, this is a Aussie Hemi 6 ive fitted into Aussie Holden Torana.......iv'e pushed the motor back 8 inches

DSC03119.JPG