stupid big block questions:

CudaJimmy said
Running a 3 core aluminum radiator.

Got a good sized hayden trans cooler.

Running a 727 with a 3500 convertor and 3:91 gears with 26.5" tires.

Yup, those will work just fine. A few more recommendations would be sub frame connectors and pinion gear snubber, should bolt right up to that 8 3/4. Make sure you get some "good" sticky tires for that puppy and if the pocket book permits a rachet shifter.