[SS Performance]

Hi all, I'm new to this site. I have been involved in racing and the performance world for many years. However I have never built a car for road racing.

I'm not familiar with all the terms used so be patient with my lack of knowledge.

I recently purchased a 02 Camaro Z28 with no drive train or suspension, no K-member, a-arms, struts, rack, rear end, panhard bar, or sway bars.

So I have a blank sheet of paper.

My intent is to build a car for open road racing, Silver State, Big Bend, Sand Hills, etc. And I would love to do Pike's Peak.

I have purchased some parts already, and I have some parts left from other projects.

I Know for SOLO or track days horse power is not always a benefit but for open road it should be helpful (I think not sure).

Anyway here is what I have, 02 Camaro with Chrome moly 8 point cage. Should I take it out and switch to mild steel? I have never been a fan of chrome moly.
The cage is not fully welded yet so removal would be easy.

Moser 9-inch with back brace, 35 spline axels, wave trac dif, 3.90 gears adjustable torque arm.

Wilwood 13inch brakes 6 piston front 4 piston rear.

4L80E trans

Choice of several possible engines LS1, LQ4, LS2 (resleeved to 4.155 bore)

Bilstein race shocks w/ 1000# front and 400# rear springs and rear adjusters (purchased used from a member here)

I'm not a fan of aftermarket K-members so I intend to locate a stock one.

Since I don't have a panhard bar I was thinking about going with a watt's link.

So here are my questions;

Should I go with stock A-arms or aftermarket? If aftermarket who's and why?

What rack and power steering pump?

What sway bars?

What size wheels? I was thinking about the ZO6 18X10.5

What size & type of tires?

I know it's a ton of questions and hope I didn't over whelm or break any site rules.

Thanks
Craig