turbo size

does anyone know what size turbo's come on 18 wheelers? is it the same size turbo that you supra guys use?

Lots of diesels used a To4 varient, the ones you see on ebay all the time with a .85 exhaust A/R and bigger, some are 1.15, much much to large. It's possable to use those, if you buy a new .68-.7ish (for the 7M) exhaust housing and a rebuild kit, or pay to have it rebuilt. Most Supra owners do use the to4 but there not from the semi's.