Hmmm... Nobody told my 440-6 solid roller / bronze geared Charger it wasnt supposed to go for 10 years of street / strip driving . Some of those years it was a daily driver .
And it was in a 70 440-6 Challenger before that !
Years are not the same as miles. I hope yours lasts forever! Good Luck. I usually put somewhere around 300,000 miles of real street driving on my motors. Sometimes, 18 hours a day at 75 to 85 mph. Everyone I talked to said use the Crane special steel gear for that usage. The last thing I want is to worry about is changing or monitoring a distributor drive gear.