ThanksI'm not sure it will bolt straight up without an adapter. The good thing about a 200-4R is that it is dual pattern for both Chevy and B.O.P. engines. I never got far into studying LS swaps but I think an older Chevy bolt pattern will connect to an LS with minor changes. Read this:
http://www.hotrod.com/articles/ccrp-0810-engine-transmission-swap-gen-3/