273 to 340 swap ?'s

Going to pull the trigger on a 340, pretty sure it's a '73, and going into a '67 Barracuda with original the 273/904. Hoping to make this a plug n play swap.
Besides the motor mount/bracket on the RH side, will everything else just bolt on the 340? As in my original A/C unit, P/S pump, Alt brackets, and the exhaust manifolds. I am attempting this transplant on the "cheap". Any help/suggestions would be most welcome!!
I'm pretty sure this has 1.88" INT valve heads, due to the year of thie engine. Will I encounter any problems bolting on a set of 2.02" J heads? Also I have a LD340 intake to put on top of it, what size (CFM) carb would best fit this engine? As far as I know the engine is factory stock, and this is just a street machine.
Thanks, Steve~