A little help please

[Amadeous]

I was reading up on the 14b but it seems like most people are saying that they take the 14b and put the 16g housing on it.. so would i lose power in doing that in reverse?

and i thought about just drilling it out as is and then putting a bolt and nut on it.., i just wasnt sure if it would seal right. and its kinda iffy on the 2nd one also so would doing that to two holes be alright also? as long as the bolts and nuts are rated for the torque spec i think i would be alright...