BB throtttle body on L-jet

[bigkev]

OK guys i have had my head off to repair some broken studs and done some more head work as the alpina work was not realy very exciting to be honest, so now i want to fit a bigger throttle body but i have the earlier L-jetronic which has manual idle control with more vacuum take off from the throttle body(see photo)
i want to know if i can get a big throttle body to fit , this is what i have



A is the brake servo vacuum
B/C is the coolant pipes which seem to just heat up the air flowing to the idle control so i can probably bypass them
D is distributor vacuum
E is cold start idle control

i would appreciate it if somebody could maybe post a picture of a 325 BB throttle body so i can compare
cheers