RE: World models 80 inch p51 engine advice
Hi Convair, I have a canister in mine which sits behind the firewall, my one balanced perfectly first go, (just lucky really)
You may need to move as much as you can to the rear.
Where the scoop attaches behind the wing you can cut some of the balsa panel to gain access to that area.
I did this in mine and I added vents, this was for the canister cooling though.