Add-A-Leaf No Lift

does any company make a full length add a leaf type spring that adds load capacity but doesn't increase the stock ride height?
it seems like they all add 1.5 inch or so to the stock height - I don't want the rear end to 1) look jacked up or 2) to change the suspension / drivetrain angle.
the alternative to an add a leaf is to replace the whole spring pack but that is costly - $500 or more versus an add a leaf that would be less than $100.

2004 Tacoma
4x4 Reg Cab

 

Load capacity is not solely a function of the leaf pack you have. GVWR take braking ability, tire load ranges, frame construction and reinforcement, and a host of other elements into account.

How much MORE are you looking to be able to load into your truck??

 

well it seems like anytime I put a few hundred pounds or so the rear end squats down and the front end lifts up.

 

Have you looked into Timbrens? http://www.tacomaworld.com/forum/suspension/7239-timbrens-installed.html