That's great that it rides good too. I hear of many lifts riding like on bricks. It has a good stance and if it clears the tires, i think if it ain't broke, don't fix it. Replace that steering box it'll probably ride like a Caddy. I'll just suggest, do your homework on the looking for a box. It might be expensive to get a good one. Don't overpay for a shit rebuild, but I hear there are many shit rebuilds out there that are subpar at best. If you can a good high quality rebuild or maybe even a brand new one, it would likely be worth the extra expense and it last another 30 years, probably longer.