a 20B is extremely unpractical. if you do some hardcore research, you'd see the 20b isn't worth it unless you are made of money. Like you'd need at least $30,000 to harness the correct power out of a 20b because the parts needed for it are hard to come across.

 

t25 from an sr20 holds 14lbs safely. just need some custom work

i would recommend the t66.

 

t25 is WAY too small.

 

stock rx7 turbos are bigger than the t25

 

was sarcasm =( thats why i recommended the t66 hah.

 

As far as I know, the t66 is the biggest turbo that will fit on a stock s5 manifold, and not cause clearance problems with the side of the engine bay.

If you are getting a custom manifold, I say t76!

 

Step one - Learn how to read a compressor map so you know what you're buying.

Would you buy a crate engine without looking at a comparable dynochart?

 

Which means, no t70s!!!

Sorry Dan.

 

do some research on the t4 hybrid set-ups enless you wanna get the BNR. but like said earlier, a stand alone is the best way to go. eventually youll have to get one anyways.

 

The 60-1 into the stock casing works wonders.