I've had a couple of these 4motion Bora's they are quite nice smooth comfy cruisers but turbo charging it would be a complete was of time and money and effort.

Its probably quite easy to do as quite a few people turbo charged VR6 golfs and corrados back in the day but the bora is a big rolly polly sponge of a thing with no steering feel or chassis finesse (I took one of them on a track day) so giving it an extra 70 bhp will just cause more headaches.

I quite like them as they are a very understated car and cost peanuts now but they dont handle well.