Dear Peter;
This is easy to solve.
Just go to your local Library & request a Motors Manual (blue)for the year of your engine (most have them)etc. Then consult/refer the section inside. Most have a copier so you can make a copy to take home etc.
There for sale on e-bay all the time too.
Good luck.
PS: If you have a specific question I'll look it up in mine for you, or just leave the plugs in. Your 'better off' W/O a filter in that application.
