what do i have to change on a 5.3 or 6.0
#1
what do i have to change on a 5.3 or 6.0
i have a 99 z28 what all to i have to change to make a 5.3 or a 6.0 bolt up i know both engine will go straight in but and i know it is a plug a play but will i have to change the oil pan and oil pump and if you have any other info let me know thanks........