There were several problems with installing this kit on the CX:
  1. The oil filter is immediately above the exhaust pipe, which exposes it to a lot of heat.
  2. The hose would have to make a 180-degree turn because the nipples go straight out.
  3. The quality of the hose sucks.
So, I decided to use stainless-steel encased hose instead of the junk shipped with the kit.   Stainless steel hoses used for automotive racing are have specific fittings, and these fittings are normally sold in "AN"  sizes.  "AN" refers to Army-Navy and has simple sizing : -4, -6, -8, etc.  The problem is that the sizes are not exactly the same as metric or fractional fittings.  I'd rather not try to force a fit, so adaptors are necessary.  Luckily the manufacturers of AN fittings have a full range of connectors to join AN to fractional or metric.  The threaded sockets on the are 3/8", the hose is AN-8.

I used Russell hoses and fittings: 

Another manufacturer is Earl's:

 

 

 
The adaptor with the 3/8" to -8 connectors.  The paper tape measure is in cm.
I knew that I would have to make a turn immediately out of the filter adaptor, so I ordered hose connectors in several degrees of turn.  These are from left to right, 180° small radius, 180° normal radius, 150° normal radius, and 120° normal radius. Normally the fittings are in red and blue anodised finishes.  Summit and Jeg's were out of anodised tight 180° fittings, so I had to get the more expensive silver colored one with the 'durable finish" that no-one will see.
It took several cycles of assembly of the hose connectors to the adaptor, then testing the fit on the car, until I was satisfied.  A tight 180°, and  a normal radius 180°. 
 
After getting the test fit in place, I tightened 3/8" to -6 couplings.  A 21mm ratchet worked.  Apparently AN fittings need special wrenches for proper tightening.  I found that metric 21 and 22, box and flare nut,  worked OK. Absolutely do not use an adjustable wrench.