...a small addition...
Both "lugs sets", signed as "ASLK" and "Corsa 01" were used to build... ...both models: Strada OS and Corsa 01 - the "ASLK" set is earlier (...it can also be found in the Corsa Thron), the "Corsa 01" set is later...
Conclusion: from the "set of lugs" it is not possible to determine the frame model...