Order it direct from Sean Hyland Motorsports. It is 32.95 from them.
http://www.seanhylandmotorsport.com/online/index.php?cPath=34&osCsid=9ed51676d24000e36b948acee11badf8
FordParts.com wants 56.95 for the coolant reservoir.
Mike Donley
Tbirds are notorious for warping rotors. Ford put too small of a rotor on a big heavy car. If it shimmys when you brake it is probably the rotors.
Mike Donley
It goes from the thermactor (smog) pump to the catalytic convertors. The piece it attaches to in the picture is a air dump valve that opens or closes to the atmosphere when necessary.