I would go straight to the TF270. I have the cnc'd by hughes victors MW and they flow [email protected]. There is something not right with this head as it does not make the power a 440-1 would or even the 270. The victor wants high compression to work it seems. I now have 12.5:1 and best ET in a 3400# street car is 10.06@134, but with 11.25:1 best was a 10.40@129/130. I have a SLT [email protected]" i think it could use a bit more cam now.