I don't have 147 and never seen its wiper motor but I doubt it'll fit. Ive looked at my Alfa GT (147 in a pretty frock) and my 156 but the wiper motor is hidden behind panels so I couldn't see. The wiper motors in Lancia Beta and Gamma are the same as Fiat 131 but the Lancia versions have two speeds and intermittent while Fiat 131s have just a single speed and intermittent. I think Series 3 Fiats might have had two speed wipers but I've never had a S3 131.
Having said all that, the two speed Lancia wiper motors are not fast either. My Trevi has Intermittent (i.e sometimes works, usually doesn't) slow speed and VERY slow speed. The Gamma is not much better having Intermittent, normal (slow) speed and a dash mounted switch that's supposed to give high speed but more often than not just stops the wipers!
Why do you need faster wipers anyway! It rarely rains in Cyprus!
Yes, the Bravo caliper carrier bolts straight onto the hub of the 131. I don't have any photos of the brake setup on my Fiat but I need to do some work on the brakes so I'll take some photos and post them here.