Moving the engine back
I think the real thing you will get out of the car is a more consistent et... Might be easier to set it up for a slick track and a more consistent 60'. If all you are doing with it is bracket racing and doing it for points then I say do it.. If this is a fun car to play with and go to events and enjoy I would skip the extra work and finish working out any other issues the car has...
Just me...