I'm making an outdrive stand with jack and will be making the space between the two pieces that connect with the drive 4 1/4" apart.

MY QUESTION:
Will all drives, bravo1, bravo3, alpha, SX, DPX fit between the 4 1/4"?

If not, I'm thinking of making that piece adjustable so I can widen to fit other drives. Else, I'll just weld it at 4 1/4".

Thanks!

i took a motorcycle jack and flipped the mount upward and cut the center out worked good for me

You will be fine at 4 1/4" all of mine are 4"

4 1/2 isn't big enough for a Konrad 520 I'm pretty sure. Depends whether you want it to sit on the flat plate or the nuts but I think the housing itself is wider than that.