My water pressure lines come out of the right side of both blocks where the drain plug for the block would be, i had 1 break off last winter when winterizing, cant get it out but can tap is and put a smaller plug in it , my question is can i just move the fitting to the other side of the block in the same drain hole and still get same pressure readings.

Mine were installed in a tap in the TStat housing before I installed closed loop cooling.

Either side of the block will be fine same water pressure or you can install it at the water neck cross over and the pressure will read the same, that will save you from cleaning out the hoses later when installed lower on the block.

What broke off????? Its only a small brass fitting inserted into larger brass fitting to connect the water psi hose. You should be able to get it out and get new fittings at the hardware store.

It is a brass 2 peice fitting , the threads broke of the large fitting in the block and dont want to come out.

I am going with crossovers with t stat and bypass, should i just tap threads in that and instal fitting in it.