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Click on image for the lowdown. 
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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Sep 2003 Posts: 37 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2003 Posts: 37 | Thanks for the reply.
The ports are on the head itself - looking down onto the back of the exhaust valve.
What is the difference between the R44XL and XLS?
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