Vin,
You may repair the motor but you would want to research special parts that break conditions inherent within an Isuzu Engine such 'oil starvation' which each original 6VE1 engine risks.
I have just purchased a long block (only the intake and component pullied systems and their respective brackets require transfer.) The old engine literally detonated and fused requiring a 6 ft 3 " diam cheater pipe on a 1/2" drive breaker bar to break the piston loose from the crank weight that shook loose through the passenger side of the block (we have pics & vids I will post)
You can buy the motor from Jerry Lemond (jlemond@bellsouth.net) It cost me $5600.00 and winds up being a damn near $8000.00 motor with all inherent issues on a 6VE1 repaired (oil starvation is diminished to nil)
Now that the old fused block is out, and I have begun a new job. I pressed pause on my repairs to:
Lift & redo shocks & springs
Heater Core
Rims & Tires
Transmission to manual (maybe in the next year if my auto craps out with the new Jerry motor whipping its ***)
Ask and search, but the Jerry motor is the kick-assingest answer I have heard, and am close to experiencing.
Always Forward,
The Down to Earth Nurse