amc hemi swap

I got the car on a mustang dyno a few weeks ago for 2nd time and ended up at 616 rwhp , 1st time blew out a header gasket so I added cut outs just for dyno since 2.5" exhaust does not flow enough. Swapped out the 2.5" for 3"
https://photos.smugmug.com/Javelin-...6b38620/1280/20191024_173643_001_001-1280.mp4
Also been out to a few car shows