62 - 409 starter question

[RPOLS3]

I posted this over at the 348/409 site but looking for help here as well.....

I purchased a restored dated starter for our 62 409. It appears that the incorrect starter currently in the car bolts in with 3 vertical bolts from the bottom of the starter into the block - the correct restored starter bolts with 3 horizontal bolts into the bellhousing. Do I now just need the correct hardware for the bellhousing mounts or anything else?

Don't mind the custom road draft tube bracket....

Thanks in advance.