the oem part is that actually...it's a three way connection that goes in place between the oil pressure sender and the block with those threadings that you mentioned above...if you can find them used go for it, if you can find them aftermarket for cheaper go for that...but I gotta admit, finding an aftermarket solution with all of those connections is a lot easier said than done, I've looked and no where sells that kind of connection in store...atp doesn't have a solution...if you can find a website that sells it online other than onlinemazdaparts.com (which is where you can get the oem solution) then please let me know cause that would actually kick ass lol
I agree when it comes to the oem oil feed line, go aftermarket and get stainless steel braided lines instead....but I have to disagree when it comes to the water lines
on my car that I'm putting back to stock I was trying to locate the msp water lines and couldn't...so I went to atp turbo and got all the parts I would need to hook up aftermarket water lines....the price tag? just over $250 in fittings, braided lines, and banjo connections...which was after going through and finding the cheapest, shortest, and easiest connection possible
the oem water lines are WAY cheaper, bolt right up, and look stock too (if your state has emissions like mine)....use the oem parts if possible, it's easier and cheaper
I see where you are coming from when you say don't waste your money on the oem stuff, they can be pricey (and in the case of the oem oil feed line, total crap)...but you can also find them for cheap on the forums, and usually much cheaper than what you would pay for aftermarket parts instead (with the exception of the oil lines)
btw, you can find braided oil lines on ATP Turbo's website...
www.atpturbo.com
you will nee -4AN lines to bolt up to the oem connections...I'll double check my measurement when I get home tomorrow night or saturday morning, but if I recall 3 ft. is the magic length you will need, 4 ft. wouldn't hurt but I think it's a little long if I recall...I gotta measure it anyways, I'll let you know
also note: don't buy the oem oil feed line used, period...every single msp I've worked on has basically siezed that line inside the turbo, so if someone were to manage to remove it from their turbo for selling it's likely stripped beyond use and will likely leak because you can't get any kind of leverage on it to tighten it down...it's really just a crap part
and there is nothing wrong with asking questions...it's a 14pg long thread now lol, there's a lot of information, and a lot of banter...I really don't mind re-answering questions, I got nothing better to do anyways lol