asunny,
I would be very interested to see a photo of what you have done - please

1200rallycar,
The subaru lsd you speak of in your SAE car is a pretty big centre to be using in formula SAE. The engineering department at ANU uses a tiny 100mm Torsen centre. Maybe you should consider something similar because the subi centre will take more power to drive when compared to the little Torsen. Only problem is they payed nearly $1800 Oz dollars for the Torsen. Other choice is an Aluminuim solid spool type unit.

Now onto the LSD's - I have the subaru centre on my desk, its out of a 2000 group N subaru WRX. It's the front LSD out of the gearbox and there is no way this baby is going to fit the H165 housing without lots of redesigning and machining. The outside Dia can be easily modified but it's the length between the bearings thats the problem. I imagine that it is possible to use the same principles and parts to reproduce something that suits H165 but the subaru centre has 12 clutch plates so once you make a new outer housing (keep in mind that the H165 housing is shorter between bearings) then you can probably only use 6 of the subi plates. Comparisons between subi centre and H165 can be seen in the photo section because I dont know how to create a direct link here