could you use brass fittings instead on the n2o lines and use a 45 degree flare or can you only use the aluminum fittings with a 37 degree flare/chance it with a 45?
edit:
basically, there is a 45 degree brake flaring tool at hand. can it be used to make hard lines to replace the flex hose on the n2o plate setup in OP's car or are we hurting ourselves?
thanks