I recently purchased a OEM flexplate from Chevrolet(47-1598). My
original flexplate had 3/8" bolt holes for the torque converter. The
new flexplate has two sets of holes for the torque converter. One set
is for one diameter torque converter and another set for a larger
torque converter. For the hles that I need to use only one of the
torque converter bolt holes is 3/8" the other two are 7/16" and
somewhat oblong. I am concerned that the original 3/8" bolts will not
be big enough to cover the oblong holes and potentially work their way
loose. Can anyone give me advice on what to do? Should I use one 3/8"
bolt and upsize the other two to 7/16"? It seems like I cannot be the
first to run into this.