Chevrolet Repair: Heater Hoses, heater hoses, hose clamps

Question
How much trouble is it to change the heater hose that goes to the intake manifold?
Where can I purchased this hose other than the dealer?

1994 Chev pickup 1/2 ton V-8. 350

This same truck has a miss when idleing.
The dealer did not have a clue what the problem.

Answer
go to an auot parts store and they wil help ya, and it will be low cost too, and as for doing it should be just a mater of taking the old one off put the new one on and tighen the hose clamps. ask at the auto parts store for help as well. they are allways there to help.