I made it to the track this weekend with my Valiant wagon that has a 408 with Trick Flow heads. It was a struggle and never made a clean pass. It went 6.57 @ 104.5 mph. Race weight is 3450 and was thru the exhaust. Will need to work on the fuel and ignition problems and get it back to the track. Hopefully the weather will be better the next time too. It 92 degrees and very humid.