E1~3 same engine different power and torque. E4~6 same engine also different power and torque. E7~8 same engine also minor different on power and torque. E9 is mivec turbo which is alot of different in power and torque. but E9 share the same block as the E7 n 8..
Earlier 4G63T found in Evo 1,2 and 3 have their timing belt located on the right side of the engine while newer ones have it on the left side of the engine.