new engine or stroker kit?

so if you havnt read my restoration thread yet...i have a problem on my hands. i was replacing the rear main seal because the motor has been sitting for 3 years and while removing the crank found several connecting rod bearings to be junk. so, being that it took out my crankshaft it looks like everything in the lower end is screwed besides the pistons. do i sell my 340 parts on here that are brand new? or get a stroker crank and connecting rods and bearings?...this sucks guys.....totally bumbed...what else would i have to change if i got a stroker kit?...or could i just get away with that?....ask me for details on what heads, cam and etc i have if you dont know...