Up grade, simple😏 change rear axle ratio to 4.88.  The 3.0L  3VZ v-6 Exhaust crossover delete kit works wonders

The Lexus 1UZ-FE V-8 has been swamped many times

First off, what year is your motorhome.

All Toyota motorhomes are basically a Toyota cab and chassis with a coach body attached. There are some unique features used for motorhomes. Your rear axle should be a full float model with 6 lug wheels. Anything after 1986 will be full float. Earlier models used a 5 lug rear axle which are now unsafe and shouldn’t be used.

As a mechanic, everything is the same as on a truck.

welcome to our forum.

This little thing is new to us and I am a car mechanic so it's not an issue 

But other than the PDF that I can find are there places where I can find specific spec sheets 

We are the third owner the second owner was the first owner's granddaughter 

Luckily we have all of the books all of the manual and I'm going to be looking through that

but I'm looking for an online reference for specifications 

And or available upgrades 

It seems that this has an automatic transmission

What I've seen is that both come with a 5-speed 

I like five speeds better than automatics 

Do either ones benefit it's better than the other 

And has anybody upgraded the transmission and or engine transmission combo for better gas mileage and more power