I just went through that with my 340 stroker build, I used the ARP stud kit and two that the windage tray attaches to I actually removed some of the threads from the block #4 bearing location and bottom tapped the holes. It was a PITA, if I was just using stock main bolts I would have found a...
I'm running that same pan on my 340 stroker, with arp main studs my stock 340 windage tray wouldn't work so I used milodons windage tray which should have gone all the way to the front of the engine in my opinion. I did set the stock 340 windage tray on while the studs were out and it should...