SEAT RISER - DRIVER SEAT - ADJUSTABLE FROM 3 3/8" to 4 7/8" | SUPRA

Driver's seat risers for Supreme boats Adjustable From 3 3/8 To 4 7/8..  Comes with all stainless hardware. Comes with a Vinyl Supra not attached to the riser. The sticker can be applied after install

look at the pictures closely, if your seat platform looks like the one in the pictures it will fit. It’s designed to go on top of the Garelick 1307 seat platform. 
these are also very universal and can be used on older models with out modifications.  

• Condition: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packagings, such as an unprinted box or plastic bag.