.620 mechanical Purple Shaft?

Mushroom cams bridge the gap between a sft and a roller. Ur motor will need to be apart to install the lifters. It’s more a race only cam. Have the guides been shortened? Port work? Street or strip. How much lift can the pistons handle. Give us more info to go on. Is it stick or auto? U will need more gear and a stall approaching 4000. The .590 is a better cam. Kim