The lag on this kit will be from the turbo being a bit on the larger size for the cfm a 600 can push.I was talking to Jay at Solid turbo and he was u sure if the kits will be interchangeable with the engines being mounted lower. The steering set up gets in the way. So he was telling me that if anything needs to be changed it would be the airbox but everything else should directly swap over. I wonder if the silber kits come with bigger injectors. Needs quite a bit of fuel for that horsepower. With the smaller displacement engine I wonder if they would be less laggy then an 850+cc engine, turbo needs to spin less to get the air into the engine? So many variables I wanna see how it does though for sure.