Swapped to 528 mech cam slowed down

The problem with the comp 305/525 was it was to radical. At the time I was trying to detune the car for more of a daily driver. I had the mopar cam and I new it would Idle better. I have a 410 stroker Im building,but I wanted to get to the track this summer and my Dart wont be ready for quite sometime. Now Im faced with tearing the suspension apart to go to acouple of races. Im trying to find a good compromise, I know that means extra work.