Cutting about 1/2 a second off of your et's for a few hundred bucks is a great bang for your buck. Heck, buy some old TT rear wheels and have the dr's mounted on them so you can throw them on when you hit the track and take them off when you're done.
If you can even only cut 1.8's on dr's you will still be looking at around a 13.0 to a 13.1