What are the best small block to big block conversion mounts?

Wonder if you would have to clearance the Q A1 k frame for the oil pump perch like you would the original? The biscuit type mounts are prone to breaking. So a stronger aftermarket mount with pin should be used. Schumacher used to make a torque strap to help original style mounts live. On the Schumacher kit one of the mounts had a corner cut or sat sideways or something.
Many years ago I helped install those mounts on a friend's car. Maybe shimming was involved too.
Wonder if the QA1 perches could be shifted to to give nicer fit with OEM brackets. Or build spool mount type. Some custom similar to OEM but smaller would be cool. The OEM are big and get close to steering box.
I have a 68 spool mount k frame. My 73 up k was modified for big block. Went to put it under car and only 3 holes lined up. WTF. K was from a wrecked car. Cut the mounts off and installed them on my 68 frame.