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I have a 1990 Caprie and want to drop a GM performance 454 crate engine into it would that require engine mount modifications?
 

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I'm 99% sure the mm will fit the same frame holes.But you may run into other problems because of more weight and width differences.
 

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Big Blocks are the same dimensions from the motor mounts to the bellhousing as a small block.

It falls right in :D

GIVE 'ER!
 
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