I am sure this has been discussed, but anyway:
Bought the plug for the rear wipre delete from Arnworx. 14$ or so. Have to leave in the large rubber washer and find yourself a bottom washer...but otherwise a standard plug which works well...
Took off the rear wiper because of some internal short kept pulsing the motor even when off...and did not wipe when on...also removes dead weight (kinda heavy wiper unit)off the rear hatch and seals.
Also bought the Jager engineering Billet oilcap (sans emblem) Very nice piece with what looks like a trimmed standard oil cap inserted on the inside and held in place with polyurethane sealant. Piece is not entirely aluminum which was somewhat disappointing because it is listed as a billet cap with no mention of a plastic insert. Package states solid aluminum, too.
I am satisfied with these two purchases