Do a lot of research, I don't know a lot about the b20v swaps but I do know it you want it reliable it would be Better to build your block and use all arp hardware and a decent tune I believe, but correct me if I'm wrong
x2. And to elaborate on the hardware Arp head studs and Arp rod bolts. The rod bolts are the more important of the 2. You can do 8k with bolts safely. If you want to go higher use some aftermarket rods. you don't need a block guard. They are gimicky pieces.