340 cam

Got the link to the Howard’s cam?
Listing advertised duration doesn’t really help that much. Knowing the over lap amount does.
Part # 710031-12. .450" / .465" x 267* / 277* duration @ 0.050" 213* / 223* LSA 112*. I looked, but I couldn't find valve overlap. I think it's a pretty close replacement 340 cam.