Is it worth going with an external wastegate in order to avoid wastegate creep?

If so, can you / should you use the existing boost control solenoid method of controlling boost?

Thanks.

 

If you want to keep the noise level sensible you will not only need a modified or custom uppipe but a downpipe as well. By the time you've done that you may wish to switch to a rotated turbo as well, and then you'll want a bigger inlet pipe?

With wastegate porting running the right downpipe possibly with no splitter the boost creep would hopefully be below the level of boost you want to run?