alignment

2000 Chevy Blazer 4 wheel drive. Just replaced upper and lower ball joints both sides. Do I need to get a front wheel alignment? Thanks

Not mandatory but a good idea. Replacing ball joints does not disturb alignment settings. The alignment adjustments will be where they were before the ball jonts went bad. Before the shop does the alignment, make sure they check and adjust if necessary, chassis ride height, (the adjustment is done with the torsion bars).