I have a 302/350 with an MSD Atomic EFI set-up to run returnless. I've given up on using the supplied in-line fuel pump (limited mounting options, hot weather, etc.). I'd like to keep the returnless set-up, but would need an in-tank fuel pump option that is compatible with PWM (pulse width modulation) and can fit into a fox hangar. I believe the Aeromotive 340 is an option. Any recommendations? Thanks....and I'd be lost without the Forum!