Maybe consider running the stock tires on for a little while? They are probably really quiet tires. Might help so you can hear any issues as you test out your swap.
Why would you say that? What makes a original land cruiser appealing? My land cruiser is a blast with the LS. The thing I see people regret is overbuilding for what's really needed. Like too much suspension lift, or adding a ton of accessories that become annoying to have when a vehicle is more...
Here is mine. I had not plugged the rectangular hole from the old shifter yet in this pic. I just removed the nut on the shaft and installed the dd arm. Later I used a better piece of linkage for the dd. For the trailblazer cable I just used a nut and bolt to attach it to the shifter lever.