Jagdpanzer Berglöwe

This is a 1:100 scale fictional kitbash between a Kanonenjagdpanzer 90 and a SpPz Luchs. I saw this image (the thumbnail) randomly while browsing and just thought that a casemate SPG on an 8-rad armored car hull was a strange and interesting idea (probably a impractical idea realistically though). If there are any inaccuracies or anything you think needs to be edited, please let me know in the comments (my knowledge on cold war german tanks and vehicles is very limited). Thank You!