Does anyone know the size, length ,and pitch of the bolts that hold the bracket for the compressor on in L24 engine?

Where is your compressor mounted? If it's the monster York thing on the right side that surrounds the fuel pump, then all the engine threaded holes on that side are M8x1.25. If its mounted down low on the header side, those four threaded bosses on the block low down are M10x1.5mm    As to length, get your tape measure out....

Thank you zKars  yes it was the four bolts on the block that were 10×1.5 mm   As for the length it came out to be 7/8 of an inch I just have to find  bolts that short that a 10.9 strength Metric now ???

zKars  I saw an older post where you had installed the GEN two mini I was wondering if you had pictures of the brackets you use to mount the unit under the dashboard and if so what metal used and where I could purchase that metal ?

Im going to be doing an install as soon as the damn eBay person ships the vintage air unit. Your best bet for the mounts is just to make them out of a thin bar of steel. At least that's what it seems that everyone else is doing.

Heyitsrama yup you’re right someone messaged me to use sheet metal that is used for making the frames on homes, to bad there is no one that just makes a kit ?

Up until the last one, I was making the brackets from scratch. 

The last though I used bracket arms from vintage air.

https://www.vintageair.com/brackets/

Then attached them to a plate I made that fits the four M10 block bosses.

ZKars great thanks for the info I now have a good plan on what to do ??