Does anyone know the size of the throttle body for the stock 2001 ITR? I'm putting in more aggressive cams this winter and it was suggested that I put in a larger aftermarket throttle body. Is it necessary to put in a throttle body of a larger size? I was told to go with an aftermarket size of about 70 millimeters. I was also planning on porting and polishing the heads and putting in an aftermarket intake manifold. Right now the only mod on my car is I/H/E. Any help or suggestions would be greatly appreciated. Thanks.