These are conventional 2.0 liter Pinto prevents, exclusively chosen for their carried dimension - all cyndrical tube bores are either dimension 2 or 3 - this can be examined by looking at the launching near the supplier. It will be a four variety number, containing 2s and 3s, decrypting to the dimension each cyndrical tube. A launching studying 2232 would mean that tubes 1, 2 and 4 are dimension 2, and cyndrical tube 3 is dimension 3. Any other carried dimension is not appropriate for a Cosworth motor.