I went with an AOD so i had to cut the tranny tunnel around the bell housing and raise it up a few inch's. With a C4 you shouldn't have to do much as the bell housing is a hell of a lot smaller then the AOD's. Built a flat X-member for the tranny and tucked the mufflers under the cab so nothing hangs below the front cross member. Other then taking BBK shorty headers and modifying them to dump were I needed them everything else was pretty easy.Had a forklift 4 core rad made to fit under the header panel but with a sec gen like yours you can probably find something that will fit from another car/truck.