[S Courter]

I used headers on the 64 but am using the stock F-body exhaust manifolds on this swap. They fit with no clearance issues. The cats came with the motor so I cut the mounting flanges off leaving just a short nub of pipe. I removed all the EGR mounting points from the manifolds and welded them shut. I also welded shut the O2 sensor on the drivers side manifold as it is not located where I could use it. I fabricated down pipes to hook up to the existing exhaust system that was on the car. This included adding O2 sensor bungs on both sides. There is also an opening on the intake just behind the throttle body that needs to be plugged. I purchased a block off plate for it on E-bay.
For cooling I am using the stock F-body dual fan set up and an aluminum radiator. The fans fit the radiator real nice and came with the motor. I fabricated mounting brackets to attach the fans to the core support. The plastic fan shroud had to be trimmed around the inlet and outlet. The outlet on the LS1 does not point toward the radiator so I purchased an outlet the swivels so it can be directed down to the outlet. This also allows a spot to install a small hose barb so you can attach the steam hose from the motor. This hose is normally attached to the F-Body radiator. For radiator hoses I used part of a early 70s F-body upper hose for the lower on this swap and a stock 99 F-body upper hose for the upper on this swap. I cut this in half and reversed one end and installed a coupler. It works. Heater hoses are the same as any car. There is some clearance issues between the heater core nipples and the rear of the coil mounting brackets but hoses will go on.

EGR block off plate $9
Hoses $40
Swivel outlet $57