difference between these two cams?

Thanks man I will.

Already bought Hedman fenderwell 1-5/8 to 1-3/4 stepped tube headers. Had to buy them for a 67 LA head and cut the flange off to weld a W2 flange on so the 1-5/ 8 length will be shortened some due to the width difference between the 67 and 66

I figured I will need to work on traction next. There are 2" aluminum spacers between the axle housing and springs. I don't know anything about that but it seems like if I take those out I will have enough room for some 28" tires. Prob need some slide on traction bars too.