Unlike my good friend Mr. Howie, I do think there may have been some L89 novas built. Problem is, I have a couple of smoking guns, but no bullets. To the best of my knowledge, no specific engine codes exist for a L89 nova. Most of the smoking gun info I've gotten point to dealer installed on delivery, but when the smoke clears, I've yet to find any verifiable documentation. Please share with us any verifiable evidence that you have. There's nothing I'd like better than to prove Mr. Howie wrong.