3rd gen & 4Runners don't have "strut" front suspension: their front suspension is unequal-length control arm type with concentric coil spring/shock units.
True strut-type suspension systems (such as McPherson) use the strut to partially control suspension geometry and absorb some of the side-loading in the process. These functions are performed by the upper and lower control arms on 3rd gen 'Runners, with the shock-spring units providing only springing and damping.
Since the 4Runner's shock-spring units have nothing to do with geometry or alignment, it isn't necessary to realign after the shocks/springs have been removed and replaced. If you're dealing with true strut-type suspension you do, indeed, need to check alignment after the struts have been off.
As mentioned, the tough (and dangerous) part of doing the front shocks is disassembling the spring-shock units. Spring compressors can store a LOT of energy, and it's all too easy to have one slip, allowing the whole works to fly apart like a hand grenade. The man who took his to a shop for disassembly was very wise, I think.
While we're at it, here's my vote for Bilstein sport shocks. I put a set on our '98 and loved them. However, you'll want to look elsewhere if saving the last penny or achieving the elusive dream-whip ride are your top priorities.
Best regards
Oh, BTW, the easy way to remove 3rd gen rear shocks is to use the nut on the shock rod to counterhold while turning the dust cover (which is keyed to the shock rod) with a strap wrench or pipe wrench.
