I like your thinking on the TF 240 vs 383, as in...just as curious how it works out.
As for the 906... it's a decent head and when ported by someone familiar with these heads...280 cfm with a stock 2.08 by .500 lift is very real. Last set I flowed 1st reman since factory peaked @228 cfm.
Like a slant head there isn't much in the roof, the real gains are all in the ssr n floor.
OP, I vote for the 240 version.
