On the lookout from the exterior, the sole variances I could see was the 4afe block had no mounts for the driveshaft brackets. Internally, 4AFE had no oil squirters. Both of those are seven ribs as well.Talking of oil squirters, is there any harm not operating them if I had been to employ blacktop internals within a 4AFE block? I have also lurk abo