Project Cheap & Nasty Updated With Back Story

From that link we can see that the compressor is 42/73 and the turbine 59.9/70
That is a lot of exhaust flow for not a lot of compressor flow. Very common on diesel turbos. Has a very narrow map (usable rpm range) and would probably be just fine on a slant6 in the 250hp range as long as you don’t expect to spin it to the end of the world.