Flex plate issue on 4l80e swap! Please help !

[Megamanx268]

I posted a while back with some questions about the 4l60 to 4l80 swap. I have a 1997 z71(350 vortec) and a rebuilt 94 4l80e. Well I am currently in the middle of the swap and have come across an issue.

I bought a flex plate for a 6.0 with the spacer and it doesnt fit. The bolt pattern is slightly different and the hole in the center of the flexplate is slightly smaller. I have been diggin around every local parts store today trying to figure this out.

I found a flex plate that will work off a 2500 with a 350 that will fit and has the six bolt holes for the 4l80 torque convertor however it does not have a spacer and I cant seem to find any info about a spacer for it anywhere..

My question is, do I need the spacer or not? And if so does anyone know more ab it or have a part number? I have seen everywhere that you need a spacer but im thinkin that might only be on the 5.3 or 6.0 engines

Please let me know! I need to get this figured out by tomorrow!