Just..Make sure you have a oil pan that will fit...I dont know if truck 360 oil pans are different than cars..and get a nuetral balance flex plate, because a 360 is external balance and a 318 is internal.
Like 70aarcuda mentioned, you will need a 360 car oil pan which is basically a center sump like the 318. But the 318 pan won't work because the rear seal area is different.
As for flexplates, you will need a B&M 360 externally balanced flexplate because your 318 converter is neutral. (Make sure you DO NOT get the '93 & up B&M 360 Magnum flexplate because the external balance is difference.)