Ok so I'm sure this question has been asked a few times but here goes. I have an 07 busa lowered and stretche'd about 6 inches. The rear rubs when accell hard in 1st and 2nd gear or hit a good bump. I'm about 260lbs 6'2 and my wifes about 110lbs incase I want to take her for a ride. I see a 1400lbs super spring on ebay for 188$ and my question is is there another maybe cheaper option then the super spring for 188$ and how will it ride? Any advice would be appreciated.