-are there any differences between a 2000 and 2003 31ss hull and any other changes?
-if you had the chance, would you purchase one with twin 502efi's or twin 496mag ho's? (both with about 130 hrs)
-how much does a 2003 31ss weigh (no arch)?-about 7800 dry?
-how difficult to change the plugs?
-I would guess a starter replacement would be out of the question without pulling a motor?
-how easy is it to replace impeller. Can you get the belt and brackets off and get down to take off the hoses so you can pull the entire bracket and impeller off?

I'd go with the mags as they are closed cooling. 502's are strong motors with good internals. Plugs are doable, but tight getting to centerline plugs. Impellers, doable. 7000lbs advertised dry weight. Not sure if they are any lighter since they started the bagging process. No changes to hull design that I am aware of during that period other than the bagging.

Never had to replace a starter. Thank God!

How many problems did Sonic have with their boats in 03 with the new infusion process? Anyone have any problems? Is an 03 boat worth buying?

None that I am aware of. YES, an '03 is worth looking at.

Is the 31 cored with anything, if so what,(hull,deck).

Does anyone know how sonics are constructed, cored with anything, hull bottom hull side or the deck and what about the liner?

How does the 31 Sonic react to the drive being trimmed? Is the 31 a fun boat to drive?

Can the 31 be trimmed up or is it pretty stuck to the water?

Trim'r up!!! Absolutely loves it! It's a great boat to drive!

You really need to find someone who has one of these and go ride it! Its a great ride and is a blast to go out in and have fun! Probably the best boat for the buck and the funnest that Sonic ever put out! Just asking questions is a great start but in order to really make up your mind you need a ride