If you don't do your research before spending money, you'll always spend more.

So Gary is finally selling his Rotrex kit? $3400 got you what parts exacty?

I think the C30-94 should be fine on a stock engine as long as you get a good tune. It's what I would run... though it's not something you can just slap on and forget about. If you are hitting too much power then you can throttle the Rotrex back by either dropping a restrictor into the intake which will limit peak boost / power, or install a recirc / BOV to vent the boost. Either way it's something I would do after you've got it on a dyno and had a play. Given the turbo power some people are running on stock engines, the Rotrex should be far more forgiving to stock rods and stock transmissions as it's power curve will be more linear.

And you did that while you are active in a forum that's called miataturbo?
Blasphemy.

The whole Kraftwerks c30-94 kit... except he didn't include the injectors or fuel module, which I was going to sell. And the piping looks used.. .but I'm not using it either.

And much to my surprise, the blower came with a 105mm pulley lol. so extra safe.

Wait what? You got a Kraftwerks kit from TDR?

by heavy bypass system you meant wastegate, right? why did it suck then? I've been reading post where ppl recommand it ..

well aside from setting up a wastegate, is there another way to restrict boost at higher rpms?

A bypass system/wastegate, yes. It explained why it sucked in my post you quoted. More heat, working SC harder, more weight, more complexity, less reliability. I would guess those recommending it have no real world experience with it, I do.

A restrictor will restrict boost at high RPM, that's a common approach that's simpler/lighter/easier/more reliable.

I wish I could end up with the mods you describe!
My first choice was the Trackspeed Turbo kit but after waiting for many months it is still not all there so I turned to the TDR Rotrex. I asked Gary about some combination of restrictor - pulleys - bov but he said that he can't (won't ?) help with any of that, "his kit comes only one way" and I guess that's that.
I want to move the torque curve down and forfeit top end HP on my stock 1.8 but the Rotrex landscape confuses me.

Trust me, TDR kits are quality.

Don't complicate the install. His kits (the street version kits) are for an otherwise stock engine. Oh I keep forgetting they don't come with good engine management. Just get a megasquirt from Brainiack. or whatever pnp ms you can find for your car.