It ain't even updated for 1.3.2! and use their adf.ly links to help them!
that's why they are all tied to surveys. You end up doing something that screws you, makes them money and you get nothing or a fake product, or you pass on by trying to find it somewhere else. Then you can't find it, get desperate and come back to do the survey.
first there is a prerelease of a 1.3.2 version of buildcraft but its for testing purposes if you have access to IRC you can find a link there and currently if you find any links to a 1.3.2 not posted at www.mod-buildcraft.com then it was not legally placed and also if you find a survey on adf.ly its not legally supposed to be there and should be reported to adf.ly.
If you go to the IRC page just know its a prerelease not official and with it being for testing purposes report bugs if any are found and respect the author or you will just end up banned from IRC.