I was also told that floorless trains are much lighter than stand-ups and sitdowns, dont know why but thats just what i heard and if its true, then no you couldnt. You couldnt just change the trains, you would have to change the station (as already said by vekoma fan) and you would have to change the elements on the coaster, make them bigger or smaller.
---------------
CP in 2002, get to the point