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mine have been on for about 3000 miles on fresh rebuild no problems what so ever
 

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The Ubiquitous Jimmy V.
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3,323 Posts
I have had the Mac LT's on my 99 from the get go..
No problems at all..I just took them off while engine was being freshened up and had them coated..looks nice..


jim v.
 

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Yah if it burns oil just watch the level. Mine do and will look for better valve seals to replace the factory ones when I get a chance to tear into heads.
 

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I've had mine on for close to year with no problems, it does rust at the collectors though. I paint them with oven paint whenever I'm in the area.
 
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