I have 3 intakes...the Edelbrock Perf., the Weiand 8007 and the LD4B......

One day I decided to flip them all over and compare them from underneath!

The Performer has tiny passages that would look to be ALL DONE by 5000 max. The LD4B looked the best with the Weiand 8007 a close 2nd.

Personally, I'd save my cash and run a cast iron piece unless you have nothing now. The price of used LD4B's and the Weiand equivalant are coming down at all the swapmeets around here due to the economy and hardly anyone builds a daily driver around here anymore. The Performer RPM & Airgap hold value since they are the best.

$70 is a good deal. I couldn't beat that deal since you'd have to pay shipping.