Tsk Tsk Tsk...Rarly..... I think you're Arthritis is acting up.....
but I understand about the acorn nut.....
The additional weight is minimal (one turbo)...and...
some of the T3 turbo's come with a built in wastegate.
I think the basic Philosophical(sp?) idea is to build it as mean as you can afford....'cause you'll get used to the HP and you'll be wanting more...they all do.