ok, this isn't for a honda..but a mustang i'm working on

it's a turbo 358, and should be putting down about 800-900whp
i believe it'll be runnign 72lb injectors...or maybe 95lb, haven't decided yet

we're still deciding to either sump it, or run one of hte tank covers with the tubes in it..... on the tank insert..it runs a -10 feed and -6 return....would this be adequate sizes? he was talking about wanting a -8 return...but, i told him i doubted it was necessary

opinions?