Conversions & Hybrids - Making DBW work in 98 Z28 with ls3 topend 370ci

Putting together parts for my ls3 headed 370, what all do I need to convert to dbw? I already have the manifold, TB, injectors, fuel rails, and heads. I know I can switch to a cable TB but I want to be different. Can somebody post a direct link to a sticky or give me a list. If not how much is a stock ls3 DBW TB going for in classifieds? Cuz I got one for sale. Thanx.

What's the engine, ecu, and harness?

An lq punched .030, going into 98 car. I don't have another ecu or harness trying to find out what all is needed

You are making life unnecessarily difficult. You will need a different PCM, harness, DBW pedal assembly, TAC module...to start with. I'm sure there is more but that gets you most of the way there. This is not a good move...

The LQ is probably a 24x reluctor (you didn't sat what year). LS3s operate with a 58x reluctor. Sounds like your optopms are:
Get a 24x ecu, TAC, and harness, and a 4 bolt DBW TB adapter from Speartech.
Get an LS3 ecu, harness and a 24 to 58x reluctor adapter.
Go with the 24x ecu and aftermarket 4 bolt DBC TB setup.

I figured it would be to much. But was curious. Thought I could source everything used for cheaper than DBC TB. How much can I sell my dbw TB for?