Oil ports:  I really don't think there's much improvement in oil flow in tapping the filter pocket over using the suzuki given ports.  They all go to the same place.  There may be a difference, I don't think it's worth the effort.  Now if you've seen the oil flow diagram that Savage greg posted, I reposted, lancer reposted,  You'll see that the 2 threaded plugs can be pulled and oil will flow between them.  If you plug the path between them, you'll get full flow.  So there's 2 ports just waiting for a cooler.

Oil cooler:  Get yourself an SV650 oil cooler.  I just picked up a SV1000 oil cooler, with oil lines, with the banjo bolts.  I scored big time for $30.  So I thought, the banjo bolts are the right size to fit in those 2 forementioned ports, but have different thread pitch.  Aw chit!

So if any of you know of any oil cooler banjo bolts that match our ports, let me know.

My original though was to get a couple of adapters for those ports and run some oil line between them.  That's still an option, cheap and easy to do.

O.K. I reread your original post and see one of my questions was answered sorry, Got too excited. How do you block the passageway?
Sevier

This is the proposed connection ports.  And you can see the connecting port between them. You could counter bore this port and drop a plug in it that's trapped between the clutch cover and the case for full flow thru the cooler.  Unless you're in an extreme climate or doing the dragon relentlessly, full flow shouldn't be necessary.  Because of the direction change and the oil lines being a larger diameter, getting flow thru the cooler shouldn't be an issue.

It's not the only point here to provide additional cooling, but additional volume as well.  In my opinion, the cooler should be mounted low, even with the foot pegs.  This means that when shut off the oil level isn't going to change.  And air flow to the cylinder isn't blocked either.

next time I'm idlin' next to a sv650, cover me.  

I remember something this morn... someone said these 2 ports have different threads.    That means I need to check the other plug.

Verslagen,
Do you have a parts bike? a way to check those two bolts? If your right about the one being M14 x 1.25 I couldn't find a banjo bolt that size, everything I found was M14 x 1.5
Sevier

Hey Verslagen,
I got a sv650 cooler on ebay and ordered the M12 x 1.25 banjo bolts.
All is here now and by swapping around the lines that came with the cooler I think It's going to fit with minimal trouble.
My question is the banjo bolts I ordered fit loosely into the oil cooler fitting. The barrel of the bolt is a little small, seems the barrel is long enough but not fat enough ,using the crush washers you think I'll have any trouble?
Sevier

Verslagen,
Do you think the bottom bolt, return port can be unscrewed without taking the clutch cover off? I guess I can find out but thought you might know.
Sevier