My air pump check valve (Ford: E9VE-9A487-AB) that attached to the pipe
leading to the heads broke off the pipe at the nut on my 93 Mustang GT.

When I attempted to remove the nut off the pipe, I bent/crimped the pipe
between the elbow of the pipe and the threads where the nut from the air
pump check valve would attach.  (The bend is closer to the threads than to
the elbow and is severe enough to reduce the ID of the pipe by 50%.)

Do I have to replace the pipe? (There is not a lot of space to remove the
bolt holding the pipe to the block nearest the valve.  The other bolt seems
to be more accessible.)

Could I creatively attach a new air pump check valve to the original pipe
using a high-temperature hose?  (My thought would be to buy a new pipe
assembly, cut off the threaded connection with about 1 inch of pipe
remaining and attach the new air pump check valve, then cut off the crimped
end from the original pipe and attach the two with high-temperature hose and
hose clamps.)

If I have to replace the pipe... Are there any tricks to removing the two
bolts that attach the pipe to the block?

Thanks!

Joe