unk chip; 1994?

[LGAFF]

Have 1 more chip from the Paul D collection to sell

Need some help in IDing

GM label removed

Sticker on it says

DDF5(could be D0F5)
Marshall
EE
9-12-97

Chances are this was part of JOhn Marshalls 94...Paul bought a lost of parts from his 385 build when it was done. Not sure if this was stock or a modified chip

[LGAFF]

Artcile on the car says it was immediately converted to a 385, as the date on the chip is 97, guessing this is the chip from the 385 ....car was converted to 415