There is nothing wrong with the non-IC kit. Ive had mine on for 65,000 miles and its still running strong.
you may regret getting the non-IC kit later simply because you want more power later, and upgrading to the intercooler will probably cost as much as your original kit did...
but like i said, you will still love it. its great for towing, you have all the power you need, and the driveability is great, itll give you more of a sports car feeling
