The 11320 kit contains PE railings, but is it otherwise the same as 11318? The reason I ask, is there is a wooden deck available for 11318 that says it is not for 11320, and there's none available (in stock) for 11320.

Can the 11318 kit be upgraded with aftermarket PE (Tom's) to the quality (or better) of 11320? If so which sets are worth the money, and investment of time and effort?

Thanks for any input

Both kits are reboxes from the original 1976 kit except the '20' kit has the PE. I don't see any reason why any after market equipment for this series wouldn't fit either ship. I have the '18' kit and all the after market goodies except for the wood deck. I am not a fan of after market wood decks, not to say I haven't used them in the past.

Mark