The rear quarter panels are different to the sports so it will be near impossible fitting a rear 197 bumper unless you are going to pay to have wings widened and that's expensive if it's a paintless job!
Front end shouldn't be too difficult but it will be extremely costly as there aren't many written off 197s fortunately so you may have to source the parts brand new unpainted from Renault.
im converting one, and i tink u should get ur facts right:loser: as tthe bumper will fit its the bootfloor that beeds choppin out so u can fit the zorst and diffuser
i have seen 25 written off 197's so thats were i got all parts frm for mine will b ready in 2 weeks, and r sellin it for £9000 cash low miler 8k, and in the beest colour ;. black with 19inch graphite rims