Hi Mark, you'll enjoy the little RM once you get it running. They are a fun bike. I haven't bothered getting a parts manual - the Alpha Sports website has all the diagrams and part numbers and it's hugely useful for checking what's common across the TM125, RM125M/S and RM125A. I have found that parts are readily available through Suzuki itself, Suzi Parts in Adelaide, and Vintage Suzuki in the States. And of course eBay. The Vintage Suzuki plastics are good, although a slightly too yellow colour. Original seat shape foams don't seem to be available, but a 125 A/B plastic base and Vintage Suzuki foam/cover works just fine. 1975 RM125s are an easy resto and an easy bike to live with.