Hey guys ive got a 1999 (T) 1.8T with the AGU engine fitted.... Ive been looking through peoples projects on here and have seen some good gains from a R-tech remap with a FMIC and a Ko3s turbo fitted.... Now my car has done quite alot of miles 188k To be precise

lol My question is will this just kill the car or will be alright OR should i fit another engine with less mileage and then go for the above mods?
Any help is appreciated
Cheers Lee