Don't bother recycling anything, replace the lot. Springs, bushes, shackles, pins, U-bolts, shocks, shock bushes, bolts, washers and split pins. That way you won't feel guilty about cutting all the bits off!
A couple of tips - if the pins won't knock out (or the nuts won't come off) the front mountings slip a hacksaw blade between the spring and chassis and cut through both sides - not forgetting to support the axle! The remains of the pins will knock out easily. If you can't get the tool for removing the chassis bush, pull out the rubber bit, cut through the outer metal part of the bush with a hacksaw and remove with a sharp chisel. Set up the height (as per book) before tightening the bush pins up. Messy job but very rewarding when it's done.