motor work

[randyswelding]

im buildin a 91.5 ve motor and so far i got a super phat shaft 62/71/14 turbo,a set of 6x18 sticks, lookin at motor rebuild with 60#exhaust springs,port and polished,o-ringed head also decked,and an air dog system with 3/8"line from tank to pump,ats exhaust manifold,coolertubz and a ps cooler.my question is should i go with 6x16 or 6x18 or can i detune my fuel pump with the 6x18s to make them driveable and not as hot.id like to see 400+hp.any thoughts thanked