Hey guys, been awhile since I've posted. I'm swapping my LS6 with a 2011 l99 that I'm converting to an LS3 getting rid of the DOD and holding on to the VVT for a later time so I'm going to use an LS3 timing chain cover for the CPS. I just picked up a brand new wiring harness super cheap that will take some modifications for the new E38 ECM. I was wondering what transmission module the conversion guys were using. I know Holden has a 6.0 Lumina with a module that works perfect but I was thinking about using a newer truck or car module and I'll build the harness for it. I'm keeping my 2002 4l60E with 3800 stall and installing new LS7 lifters, a cam recommended by Comp with some broad horsepower, .675 lift patriot spring kit and pushrods. I really just want to know what snags members have run into with the LS3 swap. With the mods to the block and add on's I would like to get close to 500 at the crank. I'm leaving the compression ratio the same instead of the LS3 because it's lower and I found a Roush TVS 2300 to go on top If I decide I need more HP. If anyone has any suggestions I'd like to hear them but in the meantime I'll do some reading. Good to see more new faces on LS1 truck!