Ok my drive has broken teeth on gears (2002 bravo1). Marks on shift fork.
Need to replace roller bearings, gears ,shift fork .
Do I need to buy each part or can i buy this kit 43-883473A 4
Will this give me what i need or will I have more problems.
As i understand this is a update for pre 2000 drives as mine is 2002 and serial number starts with OM.

That kit will work, but you get more bang for the buck with 43-803107T2. Check it out. Either one will work for you OM drive.

Hope this helps.
Dick

One more quistion. Are these the thick floor gears?

Yes, both kits are the new style X gears, with thick floors.