I was going to say that the subframe bolts have quite a bit bigger diameter than the core support bolts. Go try this - take one of your core support bolts and see if it screws into a body mount. I'd bet it doesn't and that should answer the question whether your's came with all the same bolts.
It screws into the body mount hole perfectly! There can be little doubt that it is not the right bolts imho.
Heartbeat City shows the core support bolts smaller too like you say so that couldn't be an original core retainer in pic above I guess.