Need advice on stripped 351C oil drain plug and fitting to repair oil pressure gauge line

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Hi all.

        I have a 3 oversized drain plug on my 351C and it still leaks. I want the drain plug to be magnetic. I've seen the rubber plugs that expand to seal, but they don't have magnets. I want something that looks stock and has a magnet. Any ideas? Is there a 4 oversize? I don't want to change the oil pan as it is original. It would be great if you could send me a link I could follow if you have a solution.

Also, I broke my Teflon oil line for my pressure gauge and don't want to replace the entire line. I found this in my parts bin but I don't know where I bought it. It's one time use only. Could someone please lead me in the right direction? Thanks! IMG-6584.jpg

 

Hemikiller

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You can use the union, just get some new compression olives (or sleeves)

https://www.homedepot.com/p/LTWFITTING-1-8-in-Brass-Compression-Sleeve-Fittings-50-Pack-HF60250/313557141

If you don't want to pull the pan to replace the weldnut inside, maybe run a tap through it for the next available size. A little grease on the tap will catch most of the chips, the magnet will usually get the rest. 

https://shop.advanceautoparts.com/p/needa-parts-oil-drain-plug-magnetic-m14-1.50-head-size-14mm-sold-by-each-090-036/22149666-P?searchTerm=090036

 
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