Gen 2 Camaro Control Arm choice

[gerno]

I am thinking about the Speedtech Arms but want to be sure I'm not limiting myself in any way with regards to other manufactures.

I've been told the Speedtech arms along with their sway bar will fit up to a 285 tire which is great. My concern is they always push to use the AFX spindle and I don't want to do that mainly due to cost. I was hoping to use the factory spindle without losing performance. I'm already way over my budget as is.