Hi Nonzo,
I am very confused about the bulkheads? I have seen 18.6 with 3, 21 with 6, 21 with 3, and now your 21 has 2. Perhaps they placed as many as necessary per boat dependent on the thickness and rigidity of the hull, so one this boat we out 3 on another 3 etc? from what I have found is the Larger one is on the newer boats with the chines, does your mates have chines, maybe it is older? seems the hulls without chines have the 6 bulkheads.
Jep it continues...gave the invader a miss. trying to wear down the red tape, may be getting there. The ones found so far that that need restoring, all seem to have repair issues and price too high, considering all the cost or rebuilding/bad repairs etc.
Older ones that are good have been re done but, taking into account new price, and that most have very old motors not many good deals.
So we continue, no rush tho, have decided to keep looking slowly , the right one will come along.
Hows your build progressing?