2nd Generation Tacoma suspension

Here's a video of my travel with TC UCAs, Billy 5100s set at 0.85" on OME 886 springs. It's still rather easy to bottom out.

http://youtu.be/R2YuZESKK9I

 

Somewhat new member here and looking to add support to the rear springs of my 2012 4dr 4x4 TRD Tacoma, 2+1 leaf set. I see the TRD Sport has a 3+1 leaf set. I had a 2001 for 5 yrs added a leaf and had to add a 1 inch front spacer over my coil and shocks to level the front. Looking to do the same but since the truck is new I want to make sure not to damage anything or have to change shocks, brake line etc. Don't have alot of money to spend and just want to be able to haul some weight and have the truck sit an inch higher. Q: Which is the best add a leaf long or short or a helper spring? Then will a (1) spacer bring the truck back to normal set. Mearsurements taken from ground to bottom lip of fender dead center of the wheels. My set id 35.5 drivers rear 36.0 passanger rear, 34.5 drivers side front and 35.0 passanger side front. Tire pressure 34 front 33 rear. Don't want to buy 5100s now. Any information on what this package would raise the truck to would help. TKS

 

Anybody know if the 2007 front shocks of a tundra will fit on a 2nd tacoma?