Personally I would go with the GTT smic. It will cost you about $50 and you can fit it yourself with the original hoses.
http://www.skylinesaustralia.com/forums/R3...age-t69501.html
You will only get heat soak after half an hour on the dyno or if you do full boost drags from light to light all round town. Boosting on the open road the airflow will keep it cool. If you decide you want more than 200 -210 kw you are going to be spending thousands of dollars and then you may want to buy a proper front mount but if you are on a budget hang on to your money for now. I made 220awkw with a smic including track days. The only time it got too hot was on the dyno(it was a nismo, slightly better than the GTT) but you will be OK at 200 - 210 with the GTT sidemount.