I have lots of advice and even some related to your swap. Do a search on TBI in the archives first as I have covered this once before and then fire some questions at me.

Is this going in your '53 6500?
Do you have the V8 bellhousing mounted yet?
Are you using a tube mount for the V8?
What year and model vehicle is your TBI 5.7 out of?
What is your budget versus time frame to complete this swap?