1994 Buick Century Replacing Coolant hoses located under in

My 1994 Century has a 3100 V6. What is the recommended method of replacing the two small coolant hoses that are run into the underside of the intake manifold near the throttle body? There's very limited access. Do I have to remove the manifold to gain the clearance? One of the old ones ruptured and I was able to cut the old ones off, but I can't force the new ones into place because the tubing is rigid and there's only 1.5" (maybe) clearance between the tubes where the hoses get inserted.

I'm attaching two pictures.