| If cost is your concern, then don't overlook stock manifolds. Plenty of people were use stock or ported stock before MS or other manifolds were available. I still have a set of ported stock manifolds on my street Z and it is making over 600HP, so if you have time but are short on funds why not spend some money on porting tools and get your gains that way? Though be aware to do a good job will take many hours and a few consumables and don't go too far otherwise they won't last. Be much better than poorly manufactured knock offs.
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