It will depend on who you run NSS with. Most have a rule pretty similar to this one.
SUSPENSION
FRONT SUSPENSION: Stock front suspension as factory-designed required. Aftermarket direct replacement suspension components including tubular A-arms permitted: However, overall design and function as factory produced must be retained.
I went through this too. I found like has already been posted, the control arms are heavier than stock. I ended up spending more time cutting and trimming lips, tabs and brackets to achieve the same result. There was a good bit of weight under the dash in my car.
What is the combo? Maybe a little left in converter or setup?