i am running a 32 active thunder with bravo 1's it is a 96 model so the drive heights are very conservative.is there a way to raise the drive heights

The easiest way is to buy a shortened lower unit from IMCO. They come in 1" and 2" shortened models. There is a 3" unit, but that is a totally new drive. I'd go with a the 2" unit and then use spacers to set the drive back down if required.