not against the rules if the weights were off...The 318is (88-91) needed this to be anywhere near competitive. I still do not know if the car will be competitive as even with an IT build it will be slightly down on power compared to its competition (taking aero and other factors into consideration i.e suspension design etc). But at least it is closer and maybe more will be built now as it is a viable option. The E21 (2.0) at its weight should be good as well and they just need to follow suit with the E21 1.8 now. Considering the VW GTI 1.8 (both C.I.S) weights and power gains compared to the BMW version they are getting closer.