Found out this morning that even though the engine runs very well it has a cracked block. Might look into getting block done with lock an stitch method. We still want to stay with a 235 and I have found several running engines. Some say for Manuel trans, some say for power glide. Is there a difference in these blocks or will one motor bolt up to either a power glide or a bell housing for a 3 speed. Haven't fooled with the 6cyl before, used to my SBC.