Never upgrade an old sit down. It is a waste of money. You could sell it and get a waveraider 1100.
The hull sucks, so you could sell it and get a 98xl 1200 or a 97-99 gp1200.
If you don't mind powervalves, you can get any year gpr or xlt.
If size doesn't scare you, you can get any 4-stroke ski.
We upgrade superjets because they only came with a 701. There's no other options. Putting parts on a raider is like putting parts on a 4-cylinder mustang. There's a 6-cylinder, 8-cylinder, Boss, Cobra, etc. just go buy the one you want.