Yes you can get a side exhaust from thunder tiger, but it is better protected were it is id say. . . I have searched the internet and were people have put on a side exhaust they've either said nothing about extra power just the looks or they have sed it gives abit more power.
my mta4 at the moment is blowing glow plugs. . . Ive messed about with making it richer and leaner with the hsn but i cant seem to get it right yet

and i dont want to mess with the lsn as i havent touched that since i got the car. Had 3 glow plugs go on me in a day, i just give up now, going to have to save and get some more.