Where can I get a 4 inch pre-bent MAF pipe going from my 3.5 LS1 MAF to my LT-72 turbo with a 4 inch inlet?Or what have you guys used.I would even use a 3.5 inch one if I need to.I think the 3 inch one I have is to small for my set up that I have now...I just don't want to have to use 45 degree hoses if I don't have too to make the transition to the turbo and LS1 MAF if I can get away from that.Thanks