04-12-2013, 02:24 PM
Id be thinking about the width of the 306s chassis legs and rad and which will fit between them best.
Otherwse the larger one, it wont make any noticable difference in lag and will cool better as well as looking closer to the hose size your likely to use (57mm at the inlet and iirc 60-63 off a 2.2 bottom pipe)
Otherwse the larger one, it wont make any noticable difference in lag and will cool better as well as looking closer to the hose size your likely to use (57mm at the inlet and iirc 60-63 off a 2.2 bottom pipe)