I think "quarterly earnings per share" is the bane of long term planning for large American manufacturing companies. Government backed Japanese manufacturers lost 100s of billion$ as a part of a patient 20 year plan to penetrate markets worldwide.
GM always seemed to be "patching" or "updating", instead of designing and retooling.
If GM management could say they could have the best, and best selling, cars in the world in five years.... but to do that they would have to lose money for 5 years. The stockholders would crap, and the board would fire everybody.
there'* no long term good business sense in mounting a flawed intake for 10 years, on top of one of the best engines ever made.
1995 SE ..Green and Rattle Can...234K mi...Bonnie (she'll outlive me)
1998 SSEI .. White ..119K mi...Evey
1996 SSE ..MajTeal..157K mi...4/12- Dealer trade full of Lucas Trans fix