Yes the trailers are generic and have adjustable bunks or rollers.
Definitely take a test ride and use an IR temp sensor to take reading of the engine and exhaust components as they are water cooled. Ask the owner when was the raw water pump impeller last changed. Is this a fresh water boat or salt water? If salt ask how old the exhaust is.
1997 2400 SCR
5.7 Vortec / Bravo 2