The 4200 only has a front sump pan. Doesn’t matter if it’s 2 or 4wd. Mark, AKA, EFI-DIY has fabricated a rear sump pan and has them for sale. He is also working on getting flywheels machined. You can go to his website, emtechmotorsports.com for more info.

1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket