1973 360 block thickness?

I,m back with more questions LOL.I have a line on a 1973 360LA engine(carb to pan)Is the 73 360 block one of the thicker cored blocks like a 71-72?It doesn,t matter to me cause I,ll probably be buying this for a stroker re-build.Just thought I,d ask if it,s one of the thicker cored blocks.Also would the heads be worth anything?Thanks.