I had one of these, different flavour to the Thunder, the pup was slightly more aggressive.  They came in 32" scale and 34" scale, from the proportions this looks like a 32"?  Looks like it might be a simple restoration, more time than money.   https://www.ebay.co.uk/itm/Matsumoku-4-string-Electric-Bass-Guitar-USED-Solid-body-Working/363275760202?hash=item5494ec324a%3Ag%3A7AgAAOSw5wlgFAR3&LH_ItemCondition=3000