2005 5.3 bolted to a 4L80e

[engairuph]

I know it has been talked about before but I seem not to find the article right now. Do I need a 6.0 flexplate with spacer or the 5.3 flexplate with spacer? This my first LS conversion with a 4l80e trans and the more I read that the majorty of individuals seem to go with Speartech for wiring mods. Love the comments or experience tech advise. I have a 1969 Suburban K-10 4x4 with 2005 5.3 and 4L80e with stage three kit along with a np205 32 spline conversion.