i havne't rebuilt a 7MGE yet, but have done many performance chevy and ford V8s (built one for a 'maro that ran 8.7 in the 1/4...
if i'm building for general driving at least 500mile break in, not to hard of driving, slowly running it harder and harder till you hit the 500 miles...
mild performance build, drive it hard, but not WOT for about 500 miles, run it for longer periods of time if you can
high performance (molly rings, forged pistons, full roller setup...you get the idea) to get the molly rings to set good they have to get HOT and be driven really hard, and with the roller setup they don't have to break in...pull it out of the garage, take it easy till its up to operating temp then have fun
it all depends on what kind of build you are doing and what you are wanting out of the build, somthing that will last a long time as a DD, or something that will run for a while, but need work more often just for drag racing...
i'm also not a huge fan of turbos, i'm a supercharger freak (from my domestic days) and i haven't found a good one for the supra yet, so when i get a new daily driver, i'm going to build a strong NA engine for my supra
