For the record: the '60-66 engine mount perches will work with the later model crossmembers without drilling any holes!!!
Rebuilt '89 power steering box installed with Rez kit. (not as much fun as I thought it would be)
New power brake booster, dual reservoir & proportioning valve installed coutesy ChevyDuty 2005. I sure hope they put some more work into their "adapter" bracket. - we needed to drill 4 new holes to make it work - none of the factory holes line up.
Mission accomplished!!! Nice day's work!
Here you go dad, here's your reward!