R134a requires "barrier hoses" and R12 didn't--or they didn't
exist then.

Seems like a conversion is doomed to leak R134a without
a hose change.

Anyone changed hoses in a conversion?  Where did the
hoses come from?  I am starting to think of a conversion for
my '87.  Also for my '88 Carrera; I know who makes hoses
for that!

                                            Richard A. Jones
                                            Boulder, Colorado
                                            '81 Vanagon  Mr Bus
                                            '87 Syncro Westy  El Jefe