The probles is - I use Trans-Dapt Performance Aluminum Oil Pans (#9004) with Fel-Pro Performance Oil Pan Gaskets (#1885). My stock oil pan bolts are too short for this combination and I may use stock bolts only with stamped (thin flange) oil pan. What aftermarket bolt kit (ARP be better) I should use? Unfortunately I'm not based in US and I can't resolve my problem here.

I found ARP Oil Pan Bolt Kits #234-1802, but I cant find thread size of this bolts.