Help with identifying radiator

I have a 3.4L 1999 Tacoma sr5 4wd MT, it was recently involved in an accident and the radiator leaked out all fluid. I've been looking up replacements and was looking at all aluminum ones. The one thing I've noticed all all the radiators I'm looking at is that there's these 2 small tubes at the bottom of all of them that my original radiator doesn't have and so I was wondering a few things. How do I identify which radiator I have and the size of the channels on the inside, if I buy one of those radiators could plug the small tubes with no issues, and also is it worth getting an aluminum radiator or should I just go for a 1:1 replacement?

 

The lower cooler is for the ATF. In your case, you won't need it and no fluid will leak from that portion.

 

Anymore all the radiators seem to come with the trans coolers .

Some people like the all Aluminum radiators .

Myself I like the old copper/brass radiators if you venture far off road they are simple to repair for me.

It comes down to what you want or need.

 

I try to buy radiators that are easily sourced, we have a proper radiator supplier in my city that makes them so I use them when I can.

The plastic ones do just fine, they can last 20 years as long as you buy a reputable brand.

I'd only suggest aluminum if you did hard off roading with lots of chassis twisting but even then its not a big deal.

But as mentionded, just buy the automatic version, it won't leak and it simply has a small heat exchanger they seal inside the bottom of the raditor.