Quote Originally Posted by hellfire_studios View Post
I went there and found this

Transmission Adapter Kit 19154766 - Crate Engine Depot

But it seems to be the reverse? is this right?

Josh
That would be needed to put a trans that was behind a GenIII motor behind a GenI motor, so yes the reverse of what you're doing...

You need this
LS1 Flexplate Spacer 12563532 - Crate Engine Depot
and these
LS1 Flexplate Spacer Bolt 12563533 - Crate Engine Depot

I reused the the stock flexplate on my 6.0L (same as 5.3L).