ITEM NAME:Flexplate Adapter Flywheel Spacer Hub fit for LS LS1 Engines 98-04 TH350 TH400 Flexplate Adapter Spacer fit for LS1 Engines 1998-2004 TH350 TH400 Conversion Swap SPECIFICATIONS.(Flexplate Adapter Spacer fit for LS1 Engines 1998-2004 TH350 TH400 Conversion Swap. Compatible With: fit for all car with LS1 engines using a TH350 or TH400 transmission on 1998-2004. 2) When installing a Th350 or Th400 behind a LS engine while using a curved flywheel, you'll need this adapter spacer.
