will an Imprezza oil cap fit the BRZ?
 

I'm getting the SBD turbo kit installed on my BRZ this month and was going to go from 0w20 oil to 0w40 oil. The 86's factory oil cap says "0w20" on it so I thought I'd replace the oil cap, partly for the hell of it and partly just to get rid of the oil cap with the 0w20 on it.

I figured I'd get a nice-looking STI one while I was at it, the oil cap below:
http://thumbs1.ebaystatic.com/d/l225...CpxQnk9EhA.jpg

it says it fits:
Legacy (Type D or later type BL / BP, since the type A-type BM / BR, including Eye Sight)
Impreza (from type A-type GH / GV / GR)
Forester (since Type A Type SH)
Exiga (since Type A YA-type, including Eye Sight)

does anyone know if it's threading/size/length is different from the BRZ oil cap? and if that one doesn't fit the BRZ, does anyone know of a STI oil cap that does fit the BRZ properly (and isn't that one that costs $100)?

Yes