ok then..
buy your $450 4e with all accessories. bolt everything off the 4efte on the 5e. turbo and acessories ect.. use 4efte ecu & and maybe slightly larger injectors to compensate for the extra cc's, lower the base timming.
sell the 4efte longblock & gearbox clutch ect.. for $450
do it for the price of some injectors and make more power
of couse you still have to do things like intercooler, intake, exhaust mods, ect witch you'l have to do with either engine