I'm not aware of a complete front end rebuild kit. I just went to Rock Auto and ordered all the wear items for my K25 front end (shocks, ball joints, inner and outer tie rods, rag joint, steering stabilizer, stabilizer bar bushings, etc.). Rock Auto was cheaper than any local source, and since I ordered it all at once the shipping was not too bad.
I can get all the parts locally, but they are usually more expensive. Rock Auto usually has good prices, but shipping will kill the good price if you submit multiple orders. Sometimes I look up parts on Rock Auto and then check to see what I can get on Amazon Prime with free shipping. Its surprising how many vendors make parts available on Amazon.
A dual stabilizer is unlikely to make any significant difference for street driving. Its designed more for off road where rocks or dirts are bouncing the steering back and forth.
Also make sure you check for frame cracks (as above), and look through the procedure to adjust the free play in your steering box. Doing a proper adjustment of steering box free play is relatively easy when you already have the tie rods disconnected to do other work.
Bruce