I have a 1987 Suzuki samurai jx I have been noticing that that upper and lower radiator hoses have been sucked flat after my Sammy is warm. I have replaced the radiator cap and thermostat. My question is, are the stock radiator hoses a hard plastic or a hard rubber. I was looking on petroworks.com and they had a hard plastic radiator hose. (mine are rubber) I will probably end up replacing both the upper and lower hose anyway. Do yall know a trusted place on the net to buy them?