I have a new (to me) 68 non-AC car with Vintage Air. Running hot. Radiator good. Just changed out to larger fan, 180 thermostat and higher output AC rated water pump. Plus has electric fan in front of AC condenser (which was running backward, but now corrected and connected to ignition so always on). Now better, 180-190 while driving, but quickly gets to 205-210 when idling in hot weather. Does not have any of the baffles and I suspect adding them is my next best bet to help. I understand the upper filler panels and lower valence, but not the masticated filler panels. Despite the great pics in this post (https://firstgenfirebird.org/forums/ubbthreads.php?ubb=showflat&Number=230387), I am disoriented without obvious external landmarks. Do the filler panels go on the sides of the radiator? What gap are they filling and what exactly do they attach to? The repro upper panel comes with fasteners. What about the lower valence and masticated panels? What bolts or clips do I use? One post mentions Chrysler headliner clips??? Can't I just use short bolts with flat folded sheetmetal nuts?
I have a double pulley for water pump and fan, 8" diameter. Should that be smaller and worth changing compared to everything else?
Unrelated question if someone has input. The car runs fine EXCEPT the engine occasionally stutters/coughs and dies, usually when hot and drive after has been idling a while or after has been off for a short period and start to drive again.
