its quite hard to tell, but
F150 wheelbase is: 112.9mm or 113mm(if you round up)
Any scale body with that wheelbase should fit normaly
the long chassis setting has a wheelbase of 99mm so anything with a 99m (or 0.1 decimals up or down from 99mm) will do fine
most scale models come in 1/24 or 1/25, xmods are 1/28, so finding one for the long chassis is gonna be harder, and even the f150 might be hard to find
GL with your search
