The 2wd selected block only relates to how close to factory tolerance each of the bores where when brand new, and this was then marked down by the dissi as a 2 for each good bore, and a 1,3 or 4 for just over or under ideal tolerance, so they picked all the 2222 ones for cosworth, the minute its honed or rebored its just the same as any late 205 pinto block so if you can find one locally all good