after market lower control arms
 

With moderate power would boxing the stockers do
just as well?

boxing stock CAs
 

I'd say yes, it's definitely worth it. Although you can get aftermarket control arms for pretty cheap these days...you could still save money and have close to the same performance by boxing the stock control arms and installing polyurethane bushings. 88workcar did this...and look at his 60ft. times! Impressive.