#5 cylinder I think

Ok here it is I have a 6.5 gen max I'm on the 3rd motor and the motor came from a 06 max which i had to switch secondary oil so I could bolt the cvt to the 06 vq3.5 bc oft he starter location ok the car was running and driving with this motor in it now just couldn't put water bc the head gasket well I changed it and crank the car no problem just no start well I burnt the 120amp fusAble link changed it well since then I have changed my ipdm, starter (AutoZone), BCM, ECU also all parts came from my 06 max I'm using to fix the 07 everything was good cranking no security light on but still no start then I pulled the ECU opened up and bam burnt trace and it's the trace #5 cylinder well got another ECU offline installed it and on my sbb pro it tells me ECU DISCONNECTED 🤤🤬🤬🤯 the numbers on the ECU I got is all the same besides the last 4#s can someone help me its all I have help me save MAX