I used to have that set of B1´s, not anymore. Almost nobody likes them or use them. Engine was an 418ci. That was an x block...etc best et with that unported set was 10.50 at about 129.

Now on the 449 is a difrent story, right now the valiant is at the shop, custom headers and a few other things needs to be done. Gilberto

P.S. Those flanges came from tti, p.n. TTIFLG-340w2 for the b1`s. and also used the TTIFLG-340w5 for my set of w5´s, about $44.00 a set, at mancinis.