Those engines have more than what's in the kit on Ebay. If you run the output from the turbo into a stock carb, it will screw up the mixture. Under enough boost it is possible to lean the carb out enough that it won't run. The one describes an injector for use while under boost. That's because the carb isn't designed to function under boost fed down the airhorn. There are systems that enclose the entire carb so when boost is applied, but even those require the fuel pressure to overcome the boost yet not too much pressure while not under boost. A common way to turbo with a carb years ago was to mount the carb to the input of the turbo so it pulls air through it like it was designed, but those systems suffered from turbo lag and mixture problems. Also cut down on the problems from running the extra piping of a wet system, they would run directly from the turbo into the manifold. This would cut down on the lag and mixture problem, but the hotter mixture would kill a lot of the advantage of the boost. I'm not saying it can't be done, just that it isn't easy to do with a carb. If you're not an expert at it and know what you're doing, you can lean a motor out and cause damage. To hand a box of parts over to a shop and say "make it work" may take more money to get it running than what it's worth. There are supercharger systems on the market that will bolt right on the earlier Mustang and not have near the problems the turbo kit would.