start by having all the parts you need..

you need for the swap:
V8 radiator becuase the hoses are on the other side as from the inline six
V8 ENGINE HARNESS WITH ECU
V8 MOTOR MOUNT CHASSIS PERCHES
V8 MOTOR RUBBER MOUNTS
here you can see the motor mount chassis perches and rubber engine mounts in the front.



STEP 1
THEN REMOVE THE ENGINE:


the engine bay should look like this


STEP 2
remove those inline six cross member perches on the cross members


STEP 3 install the V8 chassis perches
you must remove 2 rivets that are in the way
you can recycle the same bolts that was used with the inline six perches
should look like that when finished


now you need an v8 engine harness from a donor truck swap all the wires and ECU and it should be just a plug and play swap

NOTES:
inline six 4.9
uses the same bolt pattern as all ford small blocks 302 - 351 so you can use yor inline six tranny

if you have an electronic transmission like the E4OD or the AODE
you need an matching ECU for those transmissions