Switched to vortec heads so I cannot use this intake. I bought it a couple of years ago and it was already professionally ported. Port diameter at runner inlet is 1.75", more than 1/4" bigger than stock TPI. This intake baseplate will support over 400hp on a 350V8 when used with a Superram and good heads. These intakes retail for $379 from Summit Racing new, but this intake is in better than new condition, and is professionally ported. Item is listed on eBay with pictures and reserve is set at $250.

http://cgi.ebay.com/ebaymotors/ws/eB...tem=7947553534

 

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I noticed TPiS is selling some Big Mouth TPI baseplates on eBay as well but theirs run $380. My intake will outflow the TPiS unit due to the extensive porting job. Keep in mind the runners in this intake are ported THROUGHOUT, not just an inch or two in from each end. I estimate this porting job probably took at least 10-20 hours by hand and all port sizes are nearly identical to one another.

 

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This auction ends in less than a day (Wednesday evening). If you are interested don't forget to bid!