Ray is correct, I bought a bull dog block. Nothing but issues. I have no internal water leaks, but the rear plugs leak water and the oil pan will not seal at the rear main seal retainer. Lots of extra machining required. Head bolts where only tapped 1/4 inch deep, lots of issues. At the end of the day, stay far away from the Bulldog blocks.
I got a 1" tap and put it in without hitting the cylinder then cut 3 threads off to go deeper 3 turns and that got the screw in pug sealed on the rear rt plug.[koleno block #33]
