Suggestions for the Best Comp Ratio, Pistons & Cam for Street 340

The cam you chose is 1300-5600 rpm's. The stock cam will run idle to 5600 rpm's no problem. The MP replacement cam claims idle to 5800 rpm's. I used one in a 360 and I shifted at 5500 rpm's. If it would have been a 318/340, might have shifted around 5800.