I just installed a revolution marine dry joint exhaust on my 454. the angle of the riser to the exhaust tip didnt look much different than the oems. The first set of exhaust hose i installed were not 2 ply steel braided. About an hour after running both hoses blew through. Yesterday i installed the 2 ply braided hose not easy to work with at all hoping this would not collapse and solve my problem. They didnt burn through yet but i suspect they might. Basically what i am asking is due to the angel and heat could i use hump hoses? or do you guys have any other suggestions? Thanks