Allen, I opted for the 264 3/4 grind cam from Patricks w/solid lifters.
The new cam required new style lifters and different length pushrods but otherwise a direct bolt in.
I also went w/the aluminum cam gear which is what was on it originally.
Jerry, thanks for the input, I'll try that Super 300 w/a new gasket. Usually that Aviation Permatex seals pretty good so I'm surprised it's seeping. It's a brush-on type also.
Dave