the Scots are actually made again these days with some reengineering and modern materials.
http://www.flatheads-forever.com/home/component/option,com_wrapper/Itemid,128/
More than twice the money of a Weiand though. If the only difference is the extra cool look that is hard to justify...

Greets
flo

1967 Fury III 4door HT tiny 318, late model roller block, bored and stroked to 344