You could, but you would end up with the carbs poking up through the bonnet

. They are designed to be mounted verticaly and what you want are horizontaly mounted carbs. These are DCOE's and you can get them in 40's, 45's, 48's or 50's (40's for a std tuned golf, 45 for a wilder golf, 48's are a bit big even for a full race 16v). a new set if 40's with manifold and linkages is about ?700 new from big boys toys but you canpick them up 2nd hand for about ?250 - 300.
Hope this is of some help
Craig