JDben, i'm sure you've never had experience with new a b/pro foldys, so please don't give him advice in here, thanks.
first of all corey, if you're gonna put in the pro model front reinforcement plate thing then you would have to use the pro model plates. like BK said in his tut, (even though a B model plate is one plate, and pros use two) they're gonna bend. i would just use the new a plate, its a lot stronger, and you can just put in the side bolts like normal.
if your using pro model plates, then i really dunno if it would fit, i've never tried to put one in a new a.
BUT, make sure a b model foldy mech will fit on the new a, because new new as are too skinny.