All ej blocks use the same bell house an head bolt locations.
An ej207 sti block is a direct fit in a 93 Classic. The only thing to be aware of is if fitting one in a pre 98. Lasso. Or older then you would need to use your heads as the inlet ports are in a slightly different location so your manifold won’t line up. Anything from 99 onwards an the ports are fine an you can use the whole long engine.
Even the ej25 blocks are a direct fit in classics 😀
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