Cruisers are not really different than Ford/Ram/Chevy diesels when it comes to exhaust. They are just bending up a pipe and adding a muffler if you choose that option. Pretty straight forward job, I had a hotrod shop do mine, but any competent exhaust / diesel shop could knock an exhaust out in...
I can only speak for the 4.10 crowd, but I have also only seen people change to 4.10s and not 3.73.
Either way you have an awesome rig with that setup.. More importantly do you have an after market exhaust on it? Gotta let that engine sing! 😂
Not a cruiser, but man do I miss these.. I had a few vans when I was in Japan, hard to beat a turbo diesel, AWD, real frame. I hauled my dirt bike all over and was able to camp out of it. If I had this option in the USA it would easily replace my pickup..