Hi I have a crossflow from a XD and a c4 from a mates v8 mustang which came with a torque convertor the convertor bolted to the flex plate fine and I bought a c4 to crossflow bell housing so it went together fine. Before bolting it all up I started the motor and no worries then bolted up the gearbox and im unable to turn it over I removed the gearbox and I still can't spin the convertor, just wondering if all the parts I have are correct or maybe I have damaged the gearbox bolting it all together, if anyone could shed some light on this I would be grateful thanks Craig