I agree with Dan, unless you've got a turbo or have some other fuel system additions that require higher than spec flow (like a V-8 engine), I'd just put the same OEM pre-pump back in. The pre-pump just keeps the main pump from working too hard. It keeps the fuel from cavitating in the main pump. If you add a higher flow pre-pump on a NA 4 cylinder, it's kinda over-kill. With the longer pre-pump, you have to cut the metal siphon tube shorter by about an inch - possibly a little more - and then the bigger pre-pump makes it more difficult to get back through the tank top-hole - oh, and one last thing - If the larger pre-pump is somehow defective...you now have a sending unit that is one inch too short for an OEM spec pre-pump....and a new sending unit is....um...not cheap.
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