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[ClassicFordGuy]

Wow, nice setup, thank you for the detailed replies.

I think for now I plan on sticking with the mechanical lift pump on my engine so no FPHE needed at this point.

I plan on replacing my rear tank with a homemade 60 gal or so alum tank and using that for wvo and the front for diesel and using the stock fuel switch valve to go between the two.

So how does this sound:

Begin tube in hose hotest side beggining near my trucks factory fuel filter, run it back to an auxiliary fuel filter on the frame rail near the fuel switch valve, continue tube in hose back to my coolant heated fuel pickup in my 60 gal wvo tank then run the coolant hose back up the the engine. I'll do the looped return line T'ed into the fuel pickup at the tank as you mentioned. I'll have at least one temp gauge back at the fuel pickup so I know when it's safe to switch.

Does this sound like a good system design?

Couple questions:

1. Is it necisary to heat the fuel return line via tube in hose? I still have the coolant line un-used running back to the engine from my heated pickup.

2. Should I get pad heaters for either my aux fuel filter or the stock one?

3. Should the temp sensor back at my fuel pickup be in the fuel or in the coolant? Or is puting one back at the fuel pickup a bad place altogether?

4. Where is a good place to buy an auxiliary filter and possibly the "coolant heated" filter mount block that the filter scews to? I was thinking of making my own coolant heated filter mount block out of block of aluminum and some fittings to save money but would still need to get the filter first.

5. Where do you get your temp and pressure sensors and guages? Looked on mcmaster for those a while back and couldn't find anything that wasn't made of gold.

Thanks so much, sorry for the long post.

-Rob