1999 221 champion 225 efi we took out the 48 gallon tank and cleaned up the bilge area moved batteries to the center of to boat put in remote oil fill kit a new 4 bank charger battery shut off switches run all wires to a new fuse box and a ground block had to custom bend some aluminum panels for the custom fit clean up and design was done by Steve Stier of Bath, Michigan please let us know what you think also found during cleanup we found an old Champion floating key chain which is for sale at obo price thanks in advance