common ca18 problem, Ive replaced many hoses and clamps already on mine and every now and then the next weakest hose will go, best thing to do is get a complete silicon hose kit for complete peace of mind and i recommend the wurth hose clamps aswell, when i removed my intake manifold for polishing i did quite a bit of tidying up on the coolant hoses, removed the the throttle body hoses and welded up the nipples for the throttle body hoses from the outlets on the coolant rails (throttle heater hoses only necessary for snowy climates to prevent TB from freezing shut, my heater hoses to interior are also disconnected which makes things simpler, less hoses the better in my opinion, but i only drive the car weekends so not too worried about luxury, just want it neat and reliable, normally you can find hoses at any auto shop, just take with samples and find something that will work. all the hoses can be changed with intake on, so don't stress, it may be a little difficult in places but i have done it in the past without too much trouble, also Ive loosened off the alternator and let it lay down to get in there behind.
hope you come right.