is there any difference bravo1 upper to bravo2 upper is one better than the other or are they the same upper

They are the same upper, but gear ratios could be different..

Dick

200.1

The 2:1 uses the 32/27 gear set, same as used for the 1.5 upper.. Just checked the chart. It would be the same upper then.. Is one newer than the other?? What does the serial number begin with?? OL or OM? OM and newer has the X gears in them..
Hope that helps.
Dick

on a 2000 sea ray 290 150 hours mine are 1994 450 hours

I can't remember exactly when the X gears came out, shortly after the XR came out. Anyway.. check the serial number.. if it is OL, then it has the thin floored gears.. If OM, then it has the newer better gears.
Dick

bravo2s are ol is a drive with od349764 any better

OL and later have thin floored gears.. OM and newer have thick floored gears. OD would be an older version.. They made changes in the castings of the upper cases, over the years.. The newer the better when it comes to upper cases.

Dick

if you had to chose witch wood u take twin 540s in 27 datona cat

If I had to choose, I would tear them down and inspect.. But without that, I would go the newest one.. the OL. I have installed a lot of steel towers in the OL cases.. and upgrade gear kits, makes a nice drive..

Dick