See the pics from Vic previous page - he has managed to get hold of a laser cut template set to mount it into a 7.5 beam - not allowed to distribute it though because the guy who developed it is a real nice guy -however if you made a donation to him via Vic (or maybe Vic would send you a spare set I have laser cut)... You have to do a bit of cutting and welding - I have pics as I have just fitted one to Vic's beam - I am doing mine next. A few bushes need turning up as well as some merkur tca bushes being used as a diff mount.

Basically I purchased a brand new diff (new ford racing cover) with choice of ratio and posi carbon plated lsd for your price approx 1kbgp Vic knows all the part numbers etc. Then a you can modify the original stubs or buy a set from a guy in US for $450us or so. Then I have a drawing and have machined an adaptor to mount to a standard prop.