I put a set of the rolled tips on my '68 Chevelle, after modifying the tailpipes to exit at the '69 location. They only lasted about a year and were rusted through at the bottom. Probably why the 'new design' came into play. When you consider the number of plants building Chevelles and the probable uneven supply chain to the individual plants, isn't it possible certain plants' supply of these tips lasted longer than other plants?
BTW, I NEVER saw rolled edge tips on ANY '70 vehicle; Chevelle or Monte! (
Oh oh, I just used the dreaded 'Never' word! Here we go again!
)
I agree Al, if you have the rolled edge tips, USE 'EM! They're just too cool!