Wanted 15 inch speaker

I recently purchased a broken SWR Workingman's 15 bass combo amp. I repaired the electronics myself, but found the speaker was blown. The speaker in the amp was not original. It was a 4 ohm SLM (St. Louis Music) Chinese speaker.

I am looking for a reasonably priced 15 inch, 8 ohm, 150 watt plus replacement speaker. I do not need a neodymium or 400 watt monster PA speaker. Thanks.