Ah Andrew, you are the man I've heard good things about. The idea with the LS is to use it's existing Haltech ECU and a US Shift TCU for the 6R80. But the bell housing I thought was available does not exist.

With the M113 I was thinking of a Link ECU with the stock loom as I want to get rid of the Mercedes electronics, too limp mode prone for a race car. What ECU do you make, is it stand alone and does it connect into the stock engine harness? If I went the M113 way would it's trans be better assuming that it was in good nick?