[91ss]

Then post some pics of your issues. If they provided exactly what you needed, then there shouldn't be any issue?

 

[Ken Hennessy]

Tj M is the one with the questions. Maddamor is just stating what he did to fit the wheels.

 

[91ss]

lost track

 

[Tj M]

You need to explain EXACTLY your issue.

The stock impala is hubcentric front and rear with about a 3.063 dia register
Many aftermarket replacement axles are either so short on the register that they dont engage the rear rim or they are the smaller F or Y body 2.768 dia.
Your adapters front and rear should have a hole on the car side that is 3.063 ish and a stub on the wheel side that is 2.768 ish

So I had my rims drilled to spec before I knew the fronts were hub centric. So I need 5x5 half inch hub centric spacers to fit and longer studs which I have already.

 

[95wagon]

My understanding is a late corvette wheel is going to want more like a 2 inch spacer.
What wheels do you have that you beleive you only need 1/2 inch spacers.

If you truely need only 1/2 inch then you are going to need hubcentric 5x5 spacers and long studs.

If it is more like the 2 inch, you may need to go with bolt on adapters even though both patterns will be 5x5.
Same deal hubcentric .
Size , bore, stub, suppliers, I already posted for you.