Synchronizing Power Systems

Hi Members, I am facing a critical problem about synchronizing systems. Basically we are FG Wilson dealer in Bangladesh. One of our customer wants to synchronize with two FGW diesel + two CAT Diesel + one MTU Gas + Mains. Present condition of gensets; @. Only FGW genset presently synchronized with 6200Control panel. @. CAT genset presently mechanical governor and no synchronized. @. MTU Presently synchronized with Mains. I have suggested to customer as bellows; @. For FGW genset need to be changed by 6400 control panel. This panel is accepting synchronize with mains and up to 8 no's of genset. For alternator PF control module also required @. For CAT genset also we will be changed by 6400 control panel and governor will be converted to electronic by Woodward Sped controller and Actuator. For alternator PF control module also required. Would u please advice me what are the more modification required for synchronizing of following genset. Thanks Hanif