My thinking is all will fit, the 300 is the odd one? I agree with Frank, Jamie will know. I have one of each of the 6 bangers that came in these cars. Will be interested for the news. Dan
the 250 is taller and i believe the motor and/or frame mounts are slightly diffrent as well. the length is the same between all the small 6's the 240/300 blocks are compleatly diffrent, theyre longer and taller and have no interchange with the 170-250's