For the water hose, what I've found works well is if you take the old part to an auto parts store and see if they'll let you root around and find a suitable hose that has the right elbow you need, then buy the hose and cut the part you need off of it

The boots could be tricky as that's a pretty rare bike. You might be able to gob it up with flexible urethane repair or sealent or even (shudder) electrical tape. Foil tape might also work. If they're really bad then you might need to get creative by finding something else that's a physical fit but I don't know your model so don't have any easy solutions off the top of my head. The important thing is that they need to seal tightly

Hope that helps

https://cimg8.ibsrv.net/gimg/cbrforu...3fdf2eac7d.jpg
Picked up these beast. Engine is running bit rough. Needs carbs balanced. Previous owner did a number on it. Parts super difficult to find.
https://cimg0.ibsrv.net/gimg/cbrforu...01d6612612.jpg
https://cimg3.ibsrv.net/gimg/cbrforu...eb5bbf560c.jpg

Nice first post there @jmac89, looks like you have a fair bit of work to do and on the 750 no less, as you stated parts will be hard to find!
Welcome to the forum, hopefully there will be some help here with your rare beast when/if you need it.

Thanks mate.... got to go play in garage this morning and Surprisingly I have 99% of all the parts just few nuts n bolts which hopefuly aint to difficult to find replacements.. thanls for the welcome. Good to see an appreciation for these bikes.

I am in NZ and have also just taken possession of a 1988 registered 1989 CBR750 Huricane runner but has very loud Tappet noises from No1 and No4 cylinders after reading other blogs they are the worst tappets to get at with normal size hands?? The bike has typical faring stress cracks and a scrape from being dropped on the R/H side a
I am after a replacement L/H Mirror and perhaps the lower faring covers for the exhaust for behind the lower pan. Left and Right side