hmm.. ITR with a turbo charger, does it come with a intercooler set up?
you do know the B18C5 has a compression ratio of 10.6:1 right?
please get a head gasket to lower your compression and look into lower compression pistons, but i don't think driving your ITR over a long distance with boost will damage your engine as long as it's tuned correctly
look at all the factory turbocharged engines out there... i dont think a wrx driven at 95mph for an hour or two will hurt it's EJ20.....
that's when boost builds for a WRX BTW