Yeah, that's exactly what I was thinking with the female-female QD. I've been looking for something small though, and can't really find anything.

I was also thinking one like this with in/out on the same end would allow for tight clearances with some right-angle adapters:


That sucker is expensive, though.

That's the problem I had too was finding a smaller filter. I think the 90's are the way to go... but there is also another location that could be utilized... Take a chunk out halfway down between the 90 where it hooks to the rail and where it is shrunk onto the metal line down by the firewall. Just cut a chunk out the right length to shrink two QD females and a filter with the right male QD on each end so you have two females, one in and one out for the filter. There is quite a bit of plastic line between those two points to play with and fit this in.

But my concern about this would be the mass, vibrations and shock. But then you would probably have that issue up by the fuel rail too. Like I say, maybe a small remote cartridge canister and bracket mounted somewhere stable and then piped in with 90's like you say might be the most stable option.

OK, I screwed up... Went and looked at my 97 and need to regroup on that last thought. lol

On mine that line from the rail only goes down a bit and from there to the firewall it is metal, not plastic. There is a small line holder bracket in the middle under the manifold. So... If one was to just cut the metal line about two inches either to the front or rear of that small bracket, and cut out enough to add some hose and a filter you could easily just rubber hose and any universal inline filter you like before or after that line bracket into the metal line. That should support the weight of a filter just fine right there and QD's would not even be needed. Just cut the line as close to the support bracket as possible, then take out enough to put the inline in with rubber and clamps. Looks like behind it and towards the firewall would be the best spot.

You know how to put a raised ridge in a metal line right? Similar to the male on a QD? Two Flare clamps with the right gap, then C-clamp them together and it will swell it just in one spot. Doing this to the metal line after cutting would make a ridge to help hold the rubber hose. Or just flare it a bit.