Sorry to read of the Batten loss. A horrible thing.
Love it!
With rectangle ports... I think that is how most people see it.
Most people will say the W5 is a rectangle aluminum version of the W2.
IMO, A factory hp/light race head in aluminum and iron are the W2-5 set. As cast they more a good bit more air than a stock head.
The W-7-8-9 are race heads. Extra bolt bosses are a key. There own family if you wish to see it that way.
