Arias Hemi Block Main studs / sump and drive questions

Hi guys,

Wanted to ask a question to people who have experience using the Arias hemi blocks (Not the "Y" blocks, the standard main / deck / cam blocks). These are the blocks that were based on the milodon hemi blocks with the removable side pan rails. Do they have bespoke main studs for the block or do they use the KB main studs?

We are looking to invest in a new block and want to know if our spare KB main studs could be used on the engine.

Finally does anyone know if the arias hemi pan bolt pattern is different to a standard KB pan, aswell as the front gear drive and maybe the magneto drives (I believe to run a single mag, you have to use a offset drive to clear the heads because of the angle of the mag drive in the block?)

Any information you can help with is greatly appreciated.

Many thanks
Joe