Ok so this is the deal, I have a 97 aeb 1.8t and need a new turbo soon. My main concern is being reliable as I drive about 500 miles per week with her Nd also trips up to the mountains to ski. I already have bilstein struts, tein springs, 3in test pipe, downpipe and 3in borla back, open cone filter and a couple other things. I'm running stock boost on my ko3 but need a new turbo here soon. I'm thinking ko4, franken, or a GT28 setup? Like I said I need reliable with just a little extra power to help pull me and a few other people up mountain passes 7000+ ft above sea level. Also getting the aeb tuned for my turbo choice is my next question, who does the best tuning and safest. I plan on keeping this car for a long time, she has a couple small nicks and such but I truly love my car but need her to breath a little better. Thank you.