millerw

I just got a new lq4 setup in my 01 ws6 after blowing the original motor. The car has a Hughes SFi flexplate on it and a th350 swap. After i got the motor in and trans bolted up, I went to rotate the motor and it wouldn't budge. After further inspection after removing the trans again I realized the flexplate was the issue. As soon as you snug up the bolts it locks the motor. Is there a spacer I need unlike the ls1??? Not sure where to go from here and need to get it running asap.