morning, i'm unable to view your link at the mo philw as i'm unable to view images at the mo, but the dimensions u listed are correct, they are so big because of the alloy housing but the good thing about this is they dont get to hot so you can mount them anywhere, and look's a tidy little unit unlike the traditional type! and yes p34ch3y, this should work, although there is another thread i read about a year ago before i was a member and there was a number of people all running resistor on the n249 but some were still getin intermitent fault codes and other were completly fault free so there are no garrentes but they are working for me, i did do a search for the thread but i cant find it.