RTV is relatively inert. You would be better off using butyl cauking. The lenses clip together if you did not break the getting them apart. the cauking is only to waterproof them.
Gasoline and plastic are not happy together. Gasoline is a solvent for most plastics, and it stinks.
1991 OCC 461 (.030 over 454) BBC, 3.23 posi, flash to pass, drop spindles & springs, custom fender skirts, stainless full moons, Recaros, Blazer console, MOMO/wood SW w/QR, custom wood shift knob, Pioneer DEH P77DH
1992 OCC now with 5.7 tbi, DEH P77DH
For a parts list, check http://www.impalassforum.com/vBullet...1#post11691762
'95Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.