Self leveling seam sealer is the way to go. Tape the edges so you dont get any where you dont want it. Put it on light and use two coats if needed.
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Chris Smith
Smittys Custom Auto www.smittyscustomauto.com
Purpose Built Cars since 1999
Complete Turn Key Builds Custom Fab and Chassis shop
Dealer for Ridetech, Detroit Speed, Vintage Air, Billet Speacalties, Forgeline, Flamming River, No-Limit, SoffSeal, Wilwood, American Autowire, BeCool, Moser Engineering, MotorState and many more
Self leveling seam sealer. Always use a two part for any kind of seam sealer. Sem and Fusor both work good for me. Down fall is that you have to buy a gun but well worth it.