The
eBay combo Hide-A-Key lockbox will
not fit in the
gas cap cavity; I just tried it.
HOWEVER - if you reach through the front bumper slot just to the right of and below the bumper light on the passenger side and put your arm in there about 10" there is a steel frame brace with a definite shelf on it where the box DOES fit; I just tried it...
You'll have to feel around for the shelf on the left up in there but its very secure and the box will attach magnetically with no problem. No way its moving around up in that spot.
As to the touch keypad, just call me skeptical about adding any more electrical do-dads onto these cars considering the PATS security system...mess that up and you are in a world of hurt...