Ask Forge for a large single pass FMIC, they do all sizes mate, then pay for custom pipework?
 
hmm i'm not sure about it fitting behind your bumper dunno if they are different sizes this was made to to take advantage of the grills by forcing the air into the intercooler, excuse to get fr or cupra bumper??? hahaha i really want them to make this kit so everyone can benefit from the awesome looks and cooling. Sorry about pics every day i plan to take the bumper off it rains or temps drop to minus something haha if sunday is an ok day i will have the bumper off.