273 crankshaft/340

273 is balanced for lighter rods and pistons. When you add the new pistons (+) and lighter rods (-), youll still be way off, needing more weight in the 273 crank throws. Adding weight to a steel crank is $$ tungsten or whatever the balancer down there is going to use. I understand you have no balancers in Mex so Im wondering how the pricepoint of a 273 with a $$ balance and manual trans bushing machining process (?) will compare to a used 340 steel crank sent down there with a cheaper balance that will only have to remove material? Your other option would be to weigh your stuff accurately, and maybe send the specs to Eagle/Scat/? and have them balance you one out of the factory? Tough call with minimal machininsts. you can always balance a cast crank to lighter weight rod specs.
Chrysler/Plymouth/Dodge 340 cast crankshaft | eBay