It might feel faster, dunno. Track times don't lie. 15 has better heads, cams and intake tho not to mention the Boss rotating assembly and the IRS seems to have been done right and the interior uses a lot higher quality materials so its the better car on paper for sure. However, its going to be haaaarrrrd for anyone to ever make another car as mean looking as the 10-14 body style and that's the biggest problem ppl have with the 15.
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.