I've had HPS hoses on my car for about 3 years/25,000~ miles and they've been fine.
I will say the fitment isn't ideal:
Upper hose rubs right against the stock intake tube
And to fit the lower hose, I had to remove and cap off the small airbox/resonator that connects underneath the intake tube
And the experience from my recent endeavors, I highly recommend changing out ALL the 30 year old rubber on these cars