yes, indeed , the mods are prof done and give a neat look. It was sure no amateur who has done the batterie relocation and drysump.Pitty of the few damages to the interior , think it was for audio equipment ? ( as were the ashtray is normaly located ) ... on the other hand , i like the seats .. alot more side supporting then mine originals... and not race-seats, they look as een factory option ??? or custom made ? or from another car ?
Outside ofcourse you should go back "europ" , with bumpers front&aft and exhausts pointing sky
....that US set is , sorry guys, ugly 
No big deal as i remember you have to drill some extra holes but as in front the little bumperettes hide the holes that were made for the US bumper....so no big coachwork needed as painting etc...only remains the rear holes for the supports US bumper were i give a new function instead of masking it : i will mount there 2 red belts for pulling the car as seen on race cars. Even functional as in the rear it's not that obvious were to grab the car for emergency pulling. In front we have stock 2 eyes for that.Also seen perhaps some cosmetic work needed around/on the wing....could have been dirt , not sure.
Look also on the ride hight : those cars with lowered floorpan give a false look compared to our cars.I had mine already "high" ,looked on the wheels , given 10 cm clearence in the middle chassis... which is NOT enough , i touched some speedbumps !
Now got it on 12 cm and no more touching so far but this setup already gives the car a impression beeing high on the wheels... some "off-road" look 
When you go over there , please let me know, i gladly come also... in fact not that far away from my home !
see you !
Norbert