considering your setup appears to be still in boxes, i wouldn't sell any (unless 100% refundable) until you drive it in anger.

I have now 8! bars that i have collected in the last few years of racing my neon and now SRT 5 front and 4 rear bars to fiddle with.

the mentioned 'small' 3/4" rear bar will loosen my barracuda up pretty nicely... so to echo the others: 'It depends.'