did they ever make 25 with hp 500 or 525sc.want to upgrade my 454 mag to more hp and was wondering what to expect with bigger power.want to run upper 70's low 80's how much hp do i need

There were plenty of'em 500HPs. Don't know of any with 525s I think Pat stopped building them before the 525 came out. I do know they can handle alot more than what you have, try to contact Gordo on this board he used to race them and can answer alot of your questions. Good luck they are great boats as you know

My first Thunder was a 98' 25 footer with a 500hpcarb motor and a standoff box. Best speeds were 80.something but you were driving it, and driving it hard. It was not too much to handle once you got used to it and it ran in anything. I would think with a nice 500 efi motor that would get you where you want to be. I would think that the 496ho may get you mid 70's ......