53 panel diesel project

[Schwank]

Hey I'm planning to put a diesel in my 53. I don't want to modify the firewall too much, but I will if I have to. I haven't decided which diesel to put in. I could use some advice. I'm not trying to make it a hot rod or anything I want to make a solid daily driver that can tow and do anything I need it to while getting good mileage. I want to put a 5 speed behind it and good gears in the rear end. Other than that and an updated suspension, I want to keep it origional. Any advice?
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