sentences:  Engines equipped with needle unit fuel injectors and commonly four exhaust valves per cylinder are indicated by the suffix "N", so for the V8, 8V-71N.Later versions were available with turbochargers, which discharged directly into the Roots blower intake; these have a "T" suffix, and with aftercooling, a "TA", so 8V-71T or 8V-71TA.