| For clarification (exterior) since I do a lot of oil pump modifications and have many on the shelf. TT oil Pump: 
NA Oil Pump: 
Side by Side comparison: 


Oil pumps are identical from the front exterior. The ONLY thing that differs and is a dead give away on whether its a TT or NA oil pump is from the back plate. TT on the left and NA on the right: 
Inside view of the rear cover plate: 
Gears are much different internally as well as spring pressures. I'll see if I have any images of those but for the time being, there's some exterior dead give aways on what to look for.
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