Yeah there will be a little tag that'll say it on the cold side of the turbo on the housing and it should be on the outside like towards the radiator

 

ok i checked and its the h1c.is that a good turbo?also,how do you know what size housing it has.does it have that marked on there too?

 

On the speedo topic, all the electric ones I've seen go to 100. The mechanical units only go to 85 MPH.

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My 89 has an electric speedo

 

Not sure if the size is on the tag but from what ive learned the factory HC1's have a 54 mm compressor housing and a 18cm exhaust housing i think maybe a 16cm but you can upgrade those to like a 60mm and a 12 or 14cm which spools faster and compresses more air meaning more air faster