Replace X-REAS suspension without removing X-REAS

[rdruss]

My XREAS struts and shocks were replaced with standard before I bought the truck. I'm looking at replacing the crap they installed, but getting really confused with what fits. I would assume that all models would be the same size, but this doesn't seem to be the case apparently. What Billsteins did you use to to replace? Specifically part numbers. Thanks for the help

Shocks/front: 24-188401
Rear:33-329093
Spring/front: Toyota 48131-35541 and 48131-35551
rear: Toyota 48231-35321
These are 4600 model Bilsteins and the springs are '07 FJ springs