To be honest, I don't know much about A & C, maybe someone else here will have information. You should contact these owners that have a thread here on CC.
brand new guy
Personally, I would stay with well known kit manufactures.
What are you looking for in a Cobra ?
How much do you want to spend ?
I can help with your engine & drive train questions and other members as well.
Do you want a small or big block ?
Mild or wild ?
Carb or F/I ?
etc......