1980 C10 fan shroud question

[dwntwn]

Truck originally had a 250ci/4speed, I dropped in a 402ci BBC and have been running without a fan shroud.
If you look at the photos, the fan blade extends higher than the top panel that holds the radiator in place.

I do have a shroud from an '84 (big block truck) but that top panel is a different style than the one on my '80. LMC's part # for a big block shroud runs from '73-88, so that should work, but the fan blade is too high.

Is anyone running a big block with a factory shroud, and could you attach a photo?

Thanks in advance