Geeeze Darren, you just have to send me an email...

With the 21185 pump you use the 21220 or the 21230 cover. The 21220 has the second inlet from the back, and the 21230 has the second inlet from the side or the back, but the covers are interchangeable.

Remember the intermediate shaft is different with the pump.
You would use 21503 for a steel gear and 21523 for the bronze gear.

The remote filter fittings are -10 o-ring on the cover and -10 or -12 AN male for the lines. The covers do not include the fittings.