Here's your solution to putting a 4L80e or 4L85e behind your Gen 3 or 4 LS Engine.
Also works for TH350 and TH400 applications!
This kit includes:
1) Genuine GM Flexplate (11.5" bolt circle, can be used with 3 or 6 torque converter bolts)
1) Genuine GM flexplate spacer (installs between crank and flexplate unless you have a "long crank" 6.0L from 99/00)
6) Genuine GM flexplate bolts, extra long for use with the spacer