So we were right about the Kirby model, it is a HK25...I see that you are considering s Briggs 550; don't forget that Honda make an ideal engine replacement as well... the GX120 is made in Japan and seems to be a popular choice. Looking forward to seeing some more pics,
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl