'97 4wd 4runner - headlights, rear diffuser and towing questions

Good evening gentlemen!
Finally proud to register here, as I've been looking for a 4wd 4runner for about 3 months with no luck. The deman seems pretty high lately. But finally I found a good unit and now I'm a proudowner.

I have a few questions,hopefully you guys can help me:

- headlights: the previous owner installed the modified lights. They're Pretty cool but I havent been able to find out what hey are kr where to get a replacement.

- rear diffuser: i've read long posts about it, and still not sure if it is there to prevent snow and dirt from acumulating or to actually inprove milage. Any info on this?

- my 4runner comes with a towing package, what am I missing to tow a small trailer for my race car? Is it better to drive in 4wd when towing? Anything I should be careful with when towing regarding the transmission?

Yay!

 

Never use 4wd on pavement, there is no need or benefit towing in 4wd on the street.

How much does the trailer and race car weigh?

Let's see a pic of this race car!

 

So I'm having 2nd thoughts...
The 4runner that I got is in great mechanical condition. But it needs new seats, a new steering wheel would also be good, I don't love the chrome bumpers and it'd run better with a new set of tires and socks.
So my brain is thinking... is it worth putting that much money in the car to refurbish it? or will I be better selling this one and just getting a 4th gen 4runner, something more expensive which will require less work?

 

Hey, Why is my post in the 1st gen 4runner subforum? who moved it here?