I have a 96 Explorer motor that I tried putting together as a low budget motor for my Mustang, Just the stock motor with the Mustang cam and TFS valve springs. I put it together and in then found the oil pressure dropped to about 5lbs after it warmed up so now I have it back out and apart again. I have a set of pistons from an older motor ( 87 Mustang ) that had the forged pistons and could put those in or I can use the ones from the Explorer, what are the pros-cons of using the forged or the Hypers as a daily driver that won't get Nitrous or a power adder? I am going to take my crank to get cleaned up at a machine shop then replace the bearings and rings before it goes back together.