Did RMC ever come out and say they'd be willing to re-tool steel coasters? Off the top of my head, I can't think of anything they currently design that would.
Also, with the price to do so, you might as well tear down Vortex and build a new ground-up steel coaster (preferably a Mack multi-looper to keep the lower height restriction).
In regards to Racer, I think it just needs a new set of 3 bench PTC's like Thunderhawk got or Millennium Flyers like GhostRider got, both with extensive re-tracking and, hopefully, removal of the trims on the turn arounds (if Blue Steak and Phoenix can tear through their respective turns with some decent lateral G's, so can Racer). Its running the best it has in years this season and its still a pretty popular ride.