Nigel - You're soooo right about the taps - I've been there and gave up...
On the Painted Plastic (not fibreglass) story - I worked in Madrid for a while in the late 80's and saw a number of road going 125 sherpa's with white poly tanks - I'm thinking, as the 199's were, to some extent, a last ditch stock clearance exercise from the rapidly dying Bulto brand, painting the white tanks blue seams an obvious step.
But I agree with sherpa325, once the old chemicals start to leach through the poly, the paint's history.
SherpaT - your point re the fibreglass tanks is well made but for me, I'm keen on the plastic tank more from an aesthetic point of view.
Anyway, thanks all for the comments - the search goes on and the next step will be to find a set of the extra long works shocks (I think Lane L started the trend and I think they were Fox shocks - by the way where is Lane these days?
Again, many thanks all and Bob Abell, if you ever want to sell your tank, there