there wouldnt be many peep shows around these days you wouldnt think so thats a rare one.
If it takes standard 16mm film I actually know a bloke who has some filthy 16mm porn's and apparently there is a allot of people who actually collect 16mm porn and its pretty pricy to buy a full length porn film.
im not sure why but allot of porn seemed to be on 16mm not 8mm like most other movies for home use were.
so you should be able to find some new clips for it if your son gets bored with the same reel over and over again 
for the amp can you steel some parts from a 16mm projector? they get their sound from a magnetic strip from the side of the film so that strip needs to be good or the reader needs to be good, i have messed around with projectors a few times and some times getting that sound and image to lineup is a pain in the arse.
LOL- I have a guy in US who does private auctions for old peeps how stuff, also included is quite a lot of hardcore from 1920's through to 70's.. this isn't what im after.. its a peep show and so should just not quite satisfy. Films I buy are more the burlesque, non nudity type. Theres a thread on the peep show somewhere.. ill dig it out. Its been a journey to get the projector working.. trying to figure out how a continuous loop works and the final step is getting the sound to work.. im almost there, but I have a modified amp and no circuits to work from.. is all good.. its part of the fun!..BTW - my son is 5.. heres a pic of him getting treated for nits having found a 10c piece and put it through the machine..
