The impact of home porting depends on how good you are at porting. There's some gain to be had. Cams won't help you much at all without a standalone ecu. Some folks use the exhintake can trick with success, but it can be done after the head is back in the car.
If you don't already have a manual rack, they are hard to find. Best bet is to do the depowered rack option, which is easy to find with a Google search.