The closest thing we'll have to fitting what your 1998 Grumman Olson needs is a bumper from Mount-n-Lock. I recommend going with a 4" wide option which measures 92" long:
- Glossy Black # MNT43VR
There are a handful of ways to install these bumpers so I've linked our selection for you to filter through and see if any of them will match with your truck. view full answer...
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