if someone wants to modify their car that doesnt suit your taste, piss off. im sick of reading things like "omg gtr copy wannabe bla bla bla im a big gay wanker".
gtr's look hot with the wider guards, so why cant gtt's? putting guards on is one thing, putting hte badging on is another.
either give them the information they need, or go home.
for an actual reply, the front guards will probably swap over.
to fit genuine rear guards you'll need to chop off your old ones, and weld on the new ones. but you could get fibreglass guards that are an ad on to your existing ones. then you'll need to flare your guards at the wheel arch a bit to make it look all in proportion as well as get more clearance.
cheers.