Originally Posted by Toyota Tech31
On my truck i have the tsb leafs with the 1.5 toytec aal, it went right in with no cutting and i now sit 3" taller than stock in the rear.
OP, good data right here.
. Get the TSB and recover your old AAL's (or not)
You will probably be at 22" + after the TSB and will need more to match (or exceed) your 23" (guessing) in the front.
I would get the TSB AAL's from Toytec. They're 28" long and will bolt right in. *Long end to the rear.
Your old AAL's could probably be cut down to fit the TSB packs, but I'd probably just sell them off.
For reference there is 33" between the leaf retainers on the TSB, that is why the ToyTec (Deaver) TSB is 28"
The stock spring must have had more space between retainers because the AAL for stock seems to be reported at 32".
32" into the 33" space would be too tight. You could cut it down but it would be trial and error as far as the resulting spring rate.