by akaFrankCastle » Sun Mar 29, 2015 10:53 pm
Rubber is squishy but can lead to rusty body mounts on the frame and body (not really an issue in Colorado). Poly is stiff but doesn't have the associated rust worries (again, Colorado). Rubber will begin to sag in about 15 years or so (unless today's rubber body mounts are better than the olden days). Poly will still be the exact same rigid thickness 1,000 years from now.
Personally, I like rubber. I put new rubber on the '66, never got around to replacing the '69, and will be going with rubber on the '72 and '73.
Are you running any body lift or planning to?
Stroppe'd
1972 Sport, 302, 3 speed with old school Duff floor shifter, T shift Dana 20 with JB Fab twin stick, 4.11 gears with Trac-loc, Lincoln hydroboost, Chevy disc conversion, WH gas lift gate shock kit, 33" Duratrac tires on slots and about 2.5" of lift, Stroppe installed: bumper braces, dual shocks on all four corners, GM power steering, trans cooler mount, auto shift column, rollbar.
The Terrible One
1972 Sport uncut, 302, C4 with 1974 column , T shift Dana 20, 3.50 gears w/ limited slip, 1966 U13 Roadster kick panel, and factory power steering.
1973 Stroppe Baja project