K I know that a T25 is a small one. (Stock Mitsu?) But what are the sizes? T04, T3/T3, etc etc...
Thx.

 

This is one of the things I am going to try and get on the site in my sig. It basiclly goes like this:

- T3 "40"
- T3 "45"
- T3 "50"
- T3 "60"
- T3 Super 60
- T04B S-3
- T04B V1/V2
- T04B H-3
- 60-1
- 62-1
- T04E "40"
- T04E "46"
- TS04
- T61
- T64
- T66
- T04E "50"
- T04E "54"
- T04E "57"
- T04E "60"
- T70
- T72
- T76
- 68-1

The T3/T4 is somwhere in the middle of the T3 and T04 numbers. The numbers in "quotes" are the trim sizes for the compressor wheels. Just because a turbo is a T3 or T4 (T04), does it mean its universal. I highly reccommend readin up on compressor wheels and try and find the right one for you.

There is also the issue of A/R sizes. Most factory turbos come with smaller housings (42/48ish) A/Rs. For a list of cars that came with factory turbos, go to the site in my sig, scroll down to the turbo section