78 D300. and a 6.1

Pretty sure you won't have much of a problem, my tunnel is huge. Only one way to see for sure is to shove it in there and see if it fits.

Apparently, Street &Performance Inc. in Mena, AR has swapped a '93 Ramcharger with one. Might wanna call em and see how they go it to fit considering is is close to our chassis in tunnel size.
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