At 2.5" you are .25" longer than mine on both sides so that will push the 12valve up 1/2" or is it 1"? my geometry isn't what it used to be. I'm using oem 12 valve motor mounts so you might have some wiggle room if you are too high and then use something aftermarket. I think either way you are going to be close since you went 2.5"

You will have more pan clearance though