sounds ike you have the masticated fillers...but not the X fillers....can you see down to road below if looking in front of the radiator? if so you are missing the lower baffle, but if you cant, you have it... the two X fillers fill the gap between the bumper are to the radiator....they would prob give you about 5F if there...400`s and ac cars had those for more air to be pushed thru the radiator...so w a 455 I`d say you need those...part no C948084 from Classic, $75...$6 for the screw set... if you have classics catalog its on pg 343 "radiator support to bumper filler panels" Ames has them too ,part no FP191J core support fillers $99 set
