just went to the garage and compared the measurements to my 96 chevy small block's oil pan that was in the car with the rack and the measurements are almost identical.Looks like it will fit perfectly without any mods.Heres hoping and will let you know this sat when my new drivetrain arrives.Anyone knows if the dimensions of a conventional chevy small block are similar to the LS1 as in where they sit in the frame??? If they are close this will work.I had tons of room with my old engine in there!!!