Need help choosing an engine!!!

guys and gals,there is a few days left on the poll and i have made my decision as i got a deal i couldn't pass up..68 340 all new parts,kb pistons,all brgs,rings,gaskets,all machine work done,x heads rebuilt with new valves and springs,needs to be put together 1650.00 i'm happy to find this deal thanks for all the replies and votes,,ya'll have a blessed week..sd340,finally i will get to use the str-12 with a pair of 450 holleys,THE WOW FACTOR!!!