Am looking at the options for 750HP to 800 HP on a 37' stepped hull (Active Thunder).
SSM or other is not an option.

What is the best drive? Bmax? IMCO?

I've heard an XR is no stronger than a X and some ppl get those to live behind this much HP....

imo,the imco scx would be your best bet,the b max would be my 2nd choice.

on a twin application if driven correct the xrs will survive

Scx

The SCX will last a lot longer.. than the XR's, hands down.

To bad you are limiting your options to a Bravo style drive

Yeah I think most would agree that the Arneson Bravo Conversion would be the ideal set up!

The only drive that will gain Strength AND Speed!

I would assume that (like most of us) we all agree that Arnesons are a better choice but without a sponsorship, or a large amount of (Play Money) it becomes a matter of $$$$. Boating is what most of us do with what money is "left over" after paying living expenses. Not Judging Just saying!!

At first a SCX might seem MUCH less expensive but its really not.

$14000 Drive
?+Imco Stainless Gimbal Ring
?+Helmet
?+resovoir
?+Tie bar
$4000+WCM Blueprint lowers
$500+Shipping Lowers
?+drive spacers
Etc.

SCX $20,000 +or- and you probably will LOSE speed

Arneson $22,000 and you probably will GAIN speed

Bmax still has XR lower gears and it slows you down
SCX-4 + the above list + it has not proved itself, especially on a V-Bottom
X-Power to expensive

Nothing is a bolt on perfect option that solves every problem and makes your $XX,XXX boat a Half Million dollar dream offshore.

Out of my financial league, might have to give this thing up. $$$

My advise is to fix what you have and be easy on it!!