the clear side repeaters off the RX300 (I think it was) fit the mk1, which is what I did when I had mine. Having said that, there are clear (not crystal) ones on ebay at the moment for £15 a pair plus postage. The genuine items like I used will cost more than that.
Must admit, I've seen nothing for the arse end of jzs147, other than a de-tango or DIY smoke, I don't think there is much choice.