My 67 camaro needs the ventilation duct hose replaced!I realize the old original style material is NOT available. Most Classic car parts suppliers( example- year one) charge approx, $27 for 6ft., of it.I believe i neeed the 2.5" hose? (1) Is there a suitable replacement out there? (2) what is the correct size & approx., length needed to run from the blower vent connector to the chrome vents etc., needed? (3) is there a well known parts supplier (example,- advanced auto. etc) who may sell a suitable replacement at reasonable cost?