Hi Stephen it is quite easy,remove the solex bolt on adaptor plate using the original nuts bolt on a 28/36 dcd the throttle linkage fits straight on as does the choke cable,all you need are 4 studs,nuts and washers,make a paper gasket and alter the airfilter to fit the top of the weber,
This only fits to the TS engine replacing the twin choke solex
I have only have 4 left how
I have just sent one to texas approx $43 all in
hope this helps
regards
graham