Hey guys, been a while. Ready to get motor mounts. Anyone have exper. on buying these. 86 mustang GT conv., Advanced discount auto says FL 36.98, FR 31.88. Autozone say's 31.99 each, and in stock. Why is ad. disc. auto $5.00 more for the FL? Is there a difference in sets? Is there any questions I should ask them? Thanks..........79dog