This was my personal truck that I completed an Isuzu 4BD1-T diesel engine swap on. I used a NV-4500 5-speed manual transmission, upgraded the turbo to an HE-351 and fed through a stock 2000 dodge cummins intercooler. This is the second Isuzu diesel swap done in my shop.
If you have a similar gas powered classic, and want to upgrade your power, reliability, and possibly run on alternative fuels, this is your setup! I achieved 25mpg with this package, and had as much power as the stock chevy 454 it replaced. (over 400 ft lbs of torque at very low RPM)
Please contact me if you’re intersted in a diesel engine swap.