Rebuilding A Snowmobile Engine Which Snowmobile Should I Buy? HELP!!!?

Which snowmobile should i buy? HELP!!!? - rebuilding a snowmobile engine

So in 2004, silent Arctic Cat F7 EFI kit with a 6 "lift, clutch kit, BMP Stealth Pipe, speedwerx, BMP, and reduce fuel gauge, with 2000 km. and it would cost $ 3100

or ...

2003 800 Rev A Blair Morgan edition. which has about 5000 miles, but I know the owner and stroked it. It has also converted into a conversion engine and chassis. and it costs $ 3300

Which is better? Thanks