I tried Mugens shock shafts on my Intech BR6.They are longer and i could move The shocks to the lowest hole in the tower and still drive with full droop.I made up a second per lap.I also made the car longer and got more grip.To get more steering i put 0 insert in the toe in block in the rear.Sorry for my english but i think everybody understand.diffoils that work for me 5/5/3.