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As I had stated before we did a test on my sons low deck 400 in his Dart. Has stock bottom end with KB pistons and 10.6 comp. Its a mild 400 with the MP.557 solid cam and Eddy RPM heads. It has 3.91's as he drives the car all the time. He switched to the Street Dominator and ran 11.59 @ 117. Then he put the Performer RPM back on and ran 11.55 @ 116. Yes the RPM is better down low but not all that much. I wanted to try the RPM on my 63 but was afraid it might hit the hood so I went with the SD and I love it on my 63 as it has very good 60 ft's for a mid 11 car (best of 1.57) and I wonder if it would 60 better with the RPM. It definetly is no dog using the SD. But the good thing about the SD is that it is a very good intake and it sits very low so it will clear just about any cars hood when many intakes like the RPM wont. All in all both are good intakes. Ron

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