LS engines have many transplant opportunities, although LS engines don't like to be fitted to mustangs.
[video=youtube;8S5nOkizWZs]https://www.youtube.com/watch?v=8S5nOkizWZs[/video]
Maddocks’ 1986 Notchback Mustang had stock 5.3L engine with untouched 799 casting heads under the hood before the top end thermal event. The combo breathed though a GM Performance Parts carb-style intake converted to EFI with an Edelbrock elbow and 102mm throttle body. Feeding boost though the Big 3 Racing turbo kit is a BorgWarner s480 turbo. This simple, yet effective setup put down over 750 horsepower to the wheels on the Big 3 Racing Mustang Dyno.
Yeah the bottom ends are strong but pushing 750hp though it something is going to go at some point.