Speedo Drives

Ok folks, the results are in (I think...) Our speedos are driven from: 350 - Tranny 400 - Tranny Islero, Islero S - Tranny Espada (all) - Left front wheel Jarama, Jarama S - Left front wheel Miura (all) - Left front wheel Countach (all) - Left front wheel My question is, are the transmissions different from, say, manual 5 speed Jarama to manual 5 speed 400GT 2+2?I had always assumed they were the same, but here"s at least one major difference. My interest in all this is to see what is really swappable between our various vintage lambos.For example, will a Jarama 5 speed work in an Espada?Or, for that matter, can it be made to work in an Islero? Any comments or clarifications? Thanks, Fred