UPDATE***
I decided to go for running bolts all the way through i was prepared to ream the upper cast piece a couple mm but turned out i didnt have to the bolts lined up perfectly so i drilled out the old holes and installed a metal sleeve for the bolt to go through and put it all together again. Im a little worried that the car dosent vibrate or anything its dead smooth with the mount. which seems opposite the expectation for 95A poly. but anyway here are some more pics of my work